Rezumat problemă

arborel

#4293

Se dau n numere naturale, \( a_{1},a_{2},…,a_{n}\), reprezentând valorile asociate nodurilor unui arbore. Construiţi arborele astfel încât suma valorilor L(u,v) să fie maximă, unde pentru orice două frunze u şi v, cu \(u< v\), ale arborelui, L(u,v) reprezintă suma valorilor \(a_{i}\) asociate nodurilor ce formează lanţul de la u la v.

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Clasa 11 Teoria Grafurilor Arbori cu rădăcină aproximare

Rezolvă

Detalii

Problema	arborel	Operații I/O	arborel.in/arborel.out
Limita timp	0.1 secunde	Limita memorie	Total: 64 MB / Stivă 8 MB
Id soluție	#64998620	Utilizator	Agr Andrei (agrAndrei)
Fișier	arborel.cpp	Dimensiune	417 B
Data încărcării	09 Iulie 2026, 12:40	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

arborel.cpp:5:24: error: no matching function for call to ‘std::basic_ostream<char>::basic_ostream(const char [12])’
    5 | ostream g("arborel.out");
      |                        ^
In file included from /usr/include/c++/13/istream:41,
                 from /usr/include/c++/13/sstream:40,
                 from /usr/include/c++/13/complex:45,
                 from /usr/include/c++/13/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:127,
                 from arborel.cpp:1:
/usr/include/c++/13/ostream:436:7: note: candidate: ‘std::basic_ostream<_CharT, _Traits>::basic_ostream(std::basic_iostream<_CharT, _Traits>&) [with _CharT = char; _Traits = std::char_traits<char>]’
  436 |       basic_ostream(basic_iostream<_CharT, _Traits>&) { }
      |       ^~~~~~~~~~~~~
/usr/include/c++/13/ostream:436:21: note:   no known conversion for argument 1 from ‘const char [12]’ to ‘std::basic_iostream<char>&’
  436 |       basic_ostream(basic_iostream<_CharT, _Traits>&) { }
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/13/ostream:440:7: note: candidate: ‘std::basic_ostream<_CharT, _Traits>::basic_ostream(std::basic_ostream<_CharT, _Traits>&&) [with _CharT = char; _Traits = std::char_traits<char>]’
  440 |       basic_ostream(basic_ostream&& __rhs)
      |       ^~~~~~~~~~~~~
/usr/include/c++/13/ostream:440:37: note:   no known conversion for argument 1 from ‘const char [12]’ to ‘std::basic_ostream<char>&&’
  440 |       basic_ostream(basic_ostream&& __rhs)
      |                     ~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/13/ostream:431:7: note: candidate: ‘std::basic_ostream<_CharT, _Traits>::basic_ostream() [with _CharT = char; _Traits = std::char_traits<char>]’
  431 |       basic_ostream()
      |       ^~~~~~~~~~~~~
/usr/include/c++/13/ostream:431:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/13/ostream:86:7: note: candidate: ‘std::basic_ostream<_CharT, _Traits>::basic_ostream(__streambuf_type*) [with _CharT = char; _Traits = std::char_traits<char>; __streambuf_type = std::basic_streambuf<char>]’
   86 |       basic_ostream(__streambuf_type* __sb)
      |       ^~~~~~~~~~~~~
/usr/include/c++/13/ostream:86:39: note:   no known conversion for argument 1 from ‘const char [12]’ to ‘std::basic_ostream<char>::__streambuf_type*’ {aka ‘std::basic_streambuf<char>*’}
   86 |       basic_ostream(__streambuf_type* __sb)
      |                     ~~~~~~~~~~~~~~~~~~^~~~

Cum funcționează evaluarea?