Detalii evaluare: ~21667072

Detalii evaluare #21667072

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`#3107` margi

În Săptămâna Altfel – Să știi mai multe, să fi mai bun, elevii A și B se joacă un joc altfel, joc numit margi. Cei doi au la dispoziție o matrice pătratică binară de dimensiune 2ⁿ.
Scopul jocului este obținerea sumei maxim posibile prin adunarea punctajelor celor doi jucători. Dacă există mai multe posibilități de obținere a acestei sume, fiecare jucător va alege matricele cu număr de ordine mai mic.
Pentru un n număr natural dat și o matrice binară de dimensiunea 2ⁿ, se cere să se determine punctajul maxim obținut de cei doi jucători. Se cere și determinarea unei strategii de alegere a matricelor la fiecare pas care să ducă la obținerea punctajului maxim.
Lot Național Juniori 2019
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Detalii

Problema	margi	Operații I/O	`margi.in`/`margi.out`
Limita timp	0.2 secunde	Limita memorie	Total: `128 MB` / Stivă `8 MB`
Id soluție	`#21667072`	Utilizator	Sirghe Radu (radu9876)
Fișier	margi.cpp	Dimensiune	299 B
Data încărcării	09 Martie 2020, 10:05	Scor / rezultat	Eroare de compilare
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Mesaj compilare

margi.cpp: In function 'int main()':
margi.cpp:13:12: error: no match for 'operator<<' (operand types are 'std::ifstream {aka std::basic_ifstream<char>}' and 'int')
          in<<a;

            ^
margi.cpp:13:12: note: candidates are:
In file included from /usr/include/c++/4.8/string:52:0,
                 from /usr/include/c++/4.8/bits/locale_classes.h:40,
                 from /usr/include/c++/4.8/bits/ios_base.h:41,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2753:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:471:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT)
     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
     ^
/usr/include/c++/4.8/ostream:471:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:476:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char)
     operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:476:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:482:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char)
     operator<<(basic_ostream<char, _Traits>& __out, char __c)
     ^
/usr/include/c++/4.8/ostream:482:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:488:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char)
     operator<<(basic_ostream<char, _Traits>& __out, signed char __c)
     ^
/usr/include/c++/4.8/ostream:488:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:493:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char)
     operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)
     ^
/usr/include/c++/4.8/ostream:493:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:513:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
     ^
/usr/include/c++/4.8/ostream:513:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/ostream:612:0,
                 from /usr/include/c++/4.8/istream:39,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*)
     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/bits/ostream.tcc:321:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:530:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*)
     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
     ^
/usr/include/c++/4.8/ostream:530:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:543:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*)
     operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)
     ^
/usr/include/c++/4.8/ostream:543:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:548:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*)
     operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)
     ^
/usr/include/c++/4.8/ostream:548:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<char, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/istream:39:0,
                 from /usr/include/c++/4.8/sstream:38,
                 from /usr/include/c++/4.8/complex:45,
                 from /usr/include/c++/4.8/ccomplex:38,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/ostream:602:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&)
     operator<<(basic_ostream<_CharT, _Traits>&& __os, const _Tp& __x)
     ^
/usr/include/c++/4.8/ostream:602:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/ccomplex:38:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52,
                 from margi.cpp:1:
/usr/include/c++/4.8/complex:524:5: note: template<class _Tp, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::complex<_Tp>&)
     operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __x)
     ^
/usr/include/c++/4.8/complex:524:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:50:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.h:1277:5: note: template<class _RandomNumberEngine, unsigned int __w, class _UIntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::independent_bits_engine<_RandomNumberEngine, __w, _UIntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.h:1277:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:477:5: note: template<class _UIntType1, unsigned int __w1, unsigned int __n1, unsigned int __m1, unsigned int __r1, _UIntType1 __a1, unsigned int __u1, _UIntType1 __d1, unsigned int __s1, _UIntType1 __b1, unsigned int __t1, _UIntType1 __c1, unsigned int __l1, _UIntType1 __f1, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:477:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1029:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::uniform_int_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1029:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1088:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::uniform_real_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1088:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2275:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::cauchy_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2275:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1150:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::bernoulli_distribution&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1150:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2050:5: note: template<class _RealType1, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::normal_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2050:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1232:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::geometric_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1232:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2596:5: note: template<class _RealType1, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::gamma_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2596:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1883:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::exponential_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1883:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2674:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::weibull_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2674:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2750:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::extreme_value_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2750:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:156:5: note: template<class _UIntType, _UIntType __a, _UIntType __c, _UIntType __m, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::linear_congruential_engine<_UIntType, __a, __c, __m>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:156:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:632:5: note: template<class _UIntType, unsigned int __w, unsigned int __s, unsigned int __r, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::subtract_with_carry_engine<_UIntType, __w, __s, __r>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:632:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:702:5: note: template<class _RandomNumberEngine, unsigned int __p, unsigned int __r, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::discard_block_engine<_RandomNumberEngine, __p, __r>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:702:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:831:5: note: template<class _RandomNumberEngine, unsigned int __k, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::shuffle_order_engine<_RandomNumberEngine, __k>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:831:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1347:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::negative_binomial_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1347:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1552:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::poisson_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1552:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:1819:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::binomial_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:1819:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2115:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::lognormal_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2115:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2188:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::chi_squared_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2188:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2352:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::fisher_f_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2352:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2427:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::student_t_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2427:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:2886:5: note: template<class _IntType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::discrete_distribution<_IntType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:2886:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:3096:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::piecewise_constant_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:3096:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/random:52:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/random.tcc:3312:5: note: template<class _RealType, class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::piecewise_linear_distribution<_RealType>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bits/random.tcc:3312:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:65:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/bitset:1521:5: note: template<class _CharT, class _Traits, unsigned int _Nb> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::bitset<_Nb>&)
     operator<<(std::basic_ostream<_CharT, _Traits>& __os,
     ^
/usr/include/c++/4.8/bitset:1521:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:76:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Resetiosflags)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Resetiosflags __f)
     ^
/usr/include/c++/4.8/iomanip:76:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:106:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setiosflags)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Setiosflags __f)
     ^
/usr/include/c++/4.8/iomanip:106:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:140:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setbase)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Setbase __f)
     ^
/usr/include/c++/4.8/iomanip:140:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:175:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setfill<_CharT>)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Setfill<_CharT> __f)
     ^
/usr/include/c++/4.8/iomanip:175:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:205:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setprecision)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Setprecision __f)
     ^
/usr/include/c++/4.8/iomanip:205:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:235:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setw)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Setw __f)
     ^
/usr/include/c++/4.8/iomanip:235:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:71:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/iomanip:308:5: note: template<class _CharT, class _Traits, class _MoneyT> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Put_money<_MoneyT>)
     operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_money<_MoneyT> __f)
     ^
/usr/include/c++/4.8/iomanip:308:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/memory:82:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:81,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/shared_ptr.h:66:5: note: template<class _Ch, class _Tr, class _Tp, __gnu_cxx::_Lock_policy _Lp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__shared_ptr<_Tp, _Lp>&)
     operator<<(std::basic_ostream<_Ch, _Tr>& __os,
     ^
/usr/include/c++/4.8/bits/shared_ptr.h:66:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note: template<class _Dom1, class _Dom2> std::_Expr<std::_BinClos<std::__shift_left, std::_Expr, std::_Expr, _Dom1, _Dom2>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::_Expr<_Dom2, typename _Dom2::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_left, std::_Expr, std::_Constant, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const typename _Dom::value_type&)
     _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_left, std::_Constant, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const typename _Dom::value_type&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   mismatched types 'const std::_Expr<_Dom1, typename _Dom1::value_type>' and 'int'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_left, std::_Expr, std::_ValArray, _Dom, typename _Dom::value_type>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const std::_Expr<_Dom1, typename _Dom1::value_type>&, const std::valarray<typename _Dom::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::_Expr<_Dom1, typename _Dom1::value_type>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/valarray:587:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note: template<class _Dom> std::_Expr<std::_BinClos<std::__shift_left, std::_ValArray, std::_Expr, typename _Dom::value_type, _Dom>, typename std::__fun<std::__shift_left, typename _Dom1::value_type>::result_type> std::operator<<(const std::valarray<typename _Dom::value_type>&, const std::_Expr<_Dom1, typename _Dom1::value_type>&)
     _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
     ^
/usr/include/c++/4.8/bits/valarray_after.h:410:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<typename _Dom::value_type>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/valarray:1175:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_left, std::_ValArray, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_left, _Tp>::result_type> std::operator<<(const std::valarray<_Tp>&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(<<, __shift_left)
 ^
/usr/include/c++/4.8/valarray:1175:1: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<_Tp>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/valarray:1175:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_left, std::_ValArray, std::_Constant, _Tp, _Tp>, typename std::__fun<std::__shift_left, _Tp>::result_type> std::operator<<(const std::valarray<_Tp>&, const _Tp&)
 _DEFINE_BINARY_OPERATOR(<<, __shift_left)
 ^
/usr/include/c++/4.8/valarray:1175:1: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'const std::valarray<_Tp>'
          in<<a;

              ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:94:0,
                 from margi.cpp:1:
/usr/include/c++/4.8/valarray:1175:1: note: template<class _Tp> std::_Expr<std::_BinClos<std::__shift_left, std::_Constant, std::_ValArray, _Tp, _Tp>, typename std::__fun<std::__shift_left, _Tp>::result_type> std::operator<<(const _Tp&, const std::valarray<_Tp>&)
 _DEFINE_BINARY_OPERATOR(<<, __shift_left)
 ^
/usr/include/c++/4.8/valarray:1175:1: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   mismatched types 'const std::valarray<_Tp>' and 'int'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/mutex:43:0,
                 from /usr/include/c++/4.8/condition_variable:39,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:101,
                 from margi.cpp:1:
/usr/include/c++/4.8/system_error:186:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::error_code&)
     operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)
     ^
/usr/include/c++/4.8/system_error:186:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/future:40:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:103,
                 from margi.cpp:1:
/usr/include/c++/4.8/thread:232:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::thread::id)
     operator<<(basic_ostream<_CharT, _Traits>& __out, thread::id __id)
     ^
/usr/include/c++/4.8/thread:232:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
In file included from /usr/include/c++/4.8/regex:62:0,
                 from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:108,
                 from margi.cpp:1:
/usr/include/c++/4.8/bits/regex.h:1388:5: note: template<class _Ch_type, class _Ch_traits, class _Bi_iter> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::sub_match<_Bi_iter>&)
     operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
     ^
/usr/include/c++/4.8/bits/regex.h:1388:5: note:   template argument deduction/substitution failed:
margi.cpp:13:14: note:   'std::ifstream {aka std::basic_ifstream<char>}' is not derived from 'std::basic_ostream<_CharT, _Traits>'
          in<<a;

              ^
Cum funcționează evaluarea?

www.pbinfo.ro permite evaluarea a două tipuri de probleme:
probleme la care rezolvarea presupune scrierea unui program complet
probleme la care rezolvarea presupune scrierea unei secvențe de program - câteva instrucțiuni, o listă de declarații, una sau mai multe funcții, etc.
Problema margi face parte din prima categorie. Soluția propusă de tine va fi evaluată astfel:
Programul sursă este compilat folosind compilatorul corespunzător. Dacă în urma compilării se obțin erori sau avertismente, acestea sunt afișate în această pagină.
Dacă programul a fost compilat, executabilul obținut va fi rulat, furnizându-i-se unul sau mai multe seturi de date de intrare, în concordanță cu restricțiile specifice problemei. Pentru fiecare set de date se obține un anumit punctaj, în raport cu corectitudinea soluției tale.
Suma punctajelor acordate pe testele utilizate pentru verificare este 100. Astfel, soluția ta poate obține cel mult 100 de puncte, caz în care se poate considera corectă.