Detalii evaluare #38147650

Rezumat problemă

Se dau n șiruri de paranteze rotunde sau pătrate. Să se stabilească, despre fiecare șir, dacă este corect parantezat.

Detalii

Problema Paranteze3 Operații I/O paranteze3.in/paranteze3.out
Limita timp 0.1 secunde Limita memorie Total: 64 MB / Stivă 8 MB
Id soluție #38147650 Utilizator Albastroiu Roxana (BabyRoxi)
Fișier paranteze3.cpp Dimensiune 1.00 KB
Data încărcării 01 Octombrie 2022, 11:36 Scor / rezultat Eroare de compilare

Evaluare


Mesaj compilare

paranteze3.cpp: In function 'int main()':
paranteze3.cpp:25:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < s.length(); j ++){

                                     ^
paranteze3.cpp:27:25: error: invalid user-defined conversion from 'char' to 'std::stack<std::basic_string<char> >::value_type&& {aka std::basic_string<char>&&}' [-fpermissive]
                 a.push(x), ok = true;

                         ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:490:7: note: candidate is: std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>] <near match>
       basic_string(const _CharT* __s, const _Alloc& __a = _Alloc());
       ^
/usr/include/c++/4.8/bits/basic_string.h:490:7: note:   no known conversion for argument 1 from 'char' to 'const char*'
paranteze3.cpp:27:25: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
                 a.push(x), ok = true;

                         ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:490:7: error:   initializing argument 1 of 'std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' [-fpermissive]
       basic_string(const _CharT* __s, const _Alloc& __a = _Alloc());
       ^
paranteze3.cpp:27:25: error: conversion to non-const reference type 'std::stack<std::basic_string<char> >::value_type&& {aka class std::basic_string<char>&&}' from rvalue of type 'std::basic_string<char>' [-fpermissive]
                 a.push(x), ok = true;

                         ^
paranteze3.cpp:29:46: error: no match for 'operator==' (operand types are 'std::basic_string<char>' and 'char')
                     if(!a.empty() && a.top() == '(')

                                              ^
paranteze3.cpp:29:46: note: candidates are:
In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/functional:2543:5: note: template<class _Res, class ... _Args> bool std::operator==(std::nullptr_t, const std::function<_Res(_ArgTypes ...)>&)
     operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
     ^
/usr/include/c++/4.8/functional:2543:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   cannot convert 'a.std::stack<_Tp, _Sequence>::top<std::basic_string<char>, std::deque<std::basic_string<char>, std::allocator<std::basic_string<char> > > >()' (type 'std::basic_string<char>') to type 'std::nullptr_t'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/functional:2537:5: note: template<class _Res, class ... _Args> bool std::operator==(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t)
     operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
     ^
/usr/include/c++/4.8/functional:2537:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::function<_Res(_ArgTypes ...)>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/functional:55:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:66,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/tuple:813:5: note: template<class ... _TElements, class ... _UElements> constexpr bool std::operator==(const std::tuple<_Elements ...>&, const std::tuple<_Elements ...>&)
     operator==(const tuple<_TElements...>& __t,
     ^
/usr/include/c++/4.8/tuple:813:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::tuple<_Elements ...>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/tuple:39:0,
                 from /usr/include/c++/4.8/functional:55,
                 from /usr/include/c++/4.8/bits/stl_algo.h:66,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/array:228:5: note: template<class _Tp, unsigned int _Nm> bool std::operator==(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
     ^
/usr/include/c++/4.8/array:228:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::array<_Tp, _Nm>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
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 paranteze3.cpp:3:
/usr/include/c++/4.8/bits/random.tcc:2030:5: note: template<class _RealType1> bool std::operator==(const std::normal_distribution<_RealType>&, const std::normal_distribution<_RealType>&)
     operator==(const std::normal_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.tcc:2030:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::normal_distribution<_RealType>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/vector:64:0,
                 from /usr/include/c++/4.8/bits/random.h:34,
                 from /usr/include/c++/4.8/random:50,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/bits/stl_vector.h:1404:5: note: template<class _Tp, class _Alloc> bool std::operator==(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
     operator==(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^
/usr/include/c++/4.8/bits/stl_vector.h:1404:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::vector<_Tp, _Alloc>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/stack:61:0,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_stack.h:243:5: note: template<class _Tp, class _Seq> bool std::operator==(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)
     operator==(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
     ^
/usr/include/c++/4.8/bits/stl_stack.h:243:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::stack<_Tp, _Seq>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/c++/4.8/stack:60,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_deque.h:1957:5: note: template<class _Tp, class _Alloc> bool std::operator==(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)
     operator==(const deque<_Tp, _Alloc>& __x,
     ^
/usr/include/c++/4.8/bits/stl_deque.h:1957:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::deque<_Tp, _Alloc>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/c++/4.8/stack:60,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_deque.h:254:5: note: template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator==(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)
     operator==(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_deque.h:254:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/c++/4.8/stack:60,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_deque.h:247:5: note: template<class _Tp, class _Ref, class _Ptr> bool std::operator==(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
     operator==(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
     ^
/usr/include/c++/4.8/bits/stl_deque.h:247:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/locale_facets.h:48:0,
                 from /usr/include/c++/4.8/bits/basic_ios.h:37,
                 from /usr/include/c++/4.8/ios:44,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/streambuf_iterator.h:204:5: note: template<class _CharT, class _Traits> bool std::operator==(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)
     operator==(const istreambuf_iterator<_CharT, _Traits>& __a,
     ^
/usr/include/c++/4.8/bits/streambuf_iterator.h:204:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::istreambuf_iterator<_CharT, _Traits>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2519:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2519:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   mismatched types 'const _CharT*' and 'char'
                     if(!a.empty() && a.top() == '(')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2507:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator==(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2507:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   mismatched types 'const _CharT*' and 'std::basic_string<char>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2493:5: note: template<class _CharT> typename __gnu_cxx::__enable_if<std::__is_char<_Tp>::__value, bool>::__type std::operator==(const std::basic_string<_CharT>&, const std::basic_string<_CharT>&)
     operator==(const basic_string<_CharT>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2493:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   mismatched types 'const std::basic_string<_CharT>' and 'char'
                     if(!a.empty() && a.top() == '(')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2486:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2486:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   mismatched types 'const std::basic_string<_CharT, _Traits, _Alloc>' and 'char'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/string:41:0,
                 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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:133:5: note: template<class _Tp> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_CharT>&)
     operator==(const allocator<_Tp>&, const allocator<_Tp>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:133:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::allocator<_CharT>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/string:41:0,
                 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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:128:5: note: template<class _T1, class _T2> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_T2>&)
     operator==(const allocator<_T1>&, const allocator<_T2>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:128:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::allocator<_CharT>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1037:5: note: template<class _Iterator> bool std::operator==(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator==(const move_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1037:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::move_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1031:5: note: template<class _IteratorL, class _IteratorR> bool std::operator==(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator==(const move_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1031:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::move_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:341:5: note: template<class _IteratorL, class _IteratorR> bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator==(const reverse_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:341:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:291:5: note: template<class _Iterator> bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator==(const reverse_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:291:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_pair.h:214:5: note: template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^
/usr/include/c++/4.8/bits/stl_pair.h:214:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::pair<_T1, _T2>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/iosfwd:40:0,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/postypes.h:216:5: note: template<class _StateT> bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
     operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
     ^
/usr/include/c++/4.8/bits/postypes.h:216:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const std::fpos<_StateT>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33:0,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/ext/new_allocator.h:139:5: note: template<class _Tp> bool __gnu_cxx::operator==(const __gnu_cxx::new_allocator<_Tp>&, const __gnu_cxx::new_allocator<_Tp>&)
     operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
     ^
/usr/include/c++/4.8/ext/new_allocator.h:139:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const __gnu_cxx::new_allocator<_Tp>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:811:5: note: template<class _Iterator, class _Container> bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)
     operator==(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:811:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:805:5: note: template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)
     operator==(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:805:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:29:49: note:   'std::basic_string<char>' is not derived from 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>'
                     if(!a.empty() && a.top() == '(')

                                                 ^
paranteze3.cpp:33:46: error: no match for 'operator==' (operand types are 'std::basic_string<char>' and 'char')
                     if(!a.empty() && a.top() == '[')

                                              ^
paranteze3.cpp:33:46: note: candidates are:
In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/functional:2543:5: note: template<class _Res, class ... _Args> bool std::operator==(std::nullptr_t, const std::function<_Res(_ArgTypes ...)>&)
     operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
     ^
/usr/include/c++/4.8/functional:2543:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   cannot convert 'a.std::stack<_Tp, _Sequence>::top<std::basic_string<char>, std::deque<std::basic_string<char>, std::allocator<std::basic_string<char> > > >()' (type 'std::basic_string<char>') to type 'std::nullptr_t'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/functional:2537:5: note: template<class _Res, class ... _Args> bool std::operator==(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t)
     operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
     ^
/usr/include/c++/4.8/functional:2537:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::function<_Res(_ArgTypes ...)>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/functional:55:0,
                 from /usr/include/c++/4.8/bits/stl_algo.h:66,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/tuple:813:5: note: template<class ... _TElements, class ... _UElements> constexpr bool std::operator==(const std::tuple<_Elements ...>&, const std::tuple<_Elements ...>&)
     operator==(const tuple<_TElements...>& __t,
     ^
/usr/include/c++/4.8/tuple:813:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::tuple<_Elements ...>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/tuple:39:0,
                 from /usr/include/c++/4.8/functional:55,
                 from /usr/include/c++/4.8/bits/stl_algo.h:66,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/array:228:5: note: template<class _Tp, unsigned int _Nm> bool std::operator==(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&)
     operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
     ^
/usr/include/c++/4.8/array:228:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::array<_Tp, _Nm>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
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 paranteze3.cpp:3:
/usr/include/c++/4.8/bits/random.tcc:2030:5: note: template<class _RealType1> bool std::operator==(const std::normal_distribution<_RealType>&, const std::normal_distribution<_RealType>&)
     operator==(const std::normal_distribution<_RealType>& __d1,
     ^
/usr/include/c++/4.8/bits/random.tcc:2030:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::normal_distribution<_RealType>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/vector:64:0,
                 from /usr/include/c++/4.8/bits/random.h:34,
                 from /usr/include/c++/4.8/random:50,
                 from /usr/include/c++/4.8/bits/stl_algo.h:65,
                 from /usr/include/c++/4.8/algorithm:62,
                 from paranteze3.cpp:3:
/usr/include/c++/4.8/bits/stl_vector.h:1404:5: note: template<class _Tp, class _Alloc> bool std::operator==(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
     operator==(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^
/usr/include/c++/4.8/bits/stl_vector.h:1404:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::vector<_Tp, _Alloc>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/stack:61:0,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_stack.h:243:5: note: template<class _Tp, class _Seq> bool std::operator==(const std::stack<_Tp, _Seq>&, const std::stack<_Tp, _Seq>&)
     operator==(const stack<_Tp, _Seq>& __x, const stack<_Tp, _Seq>& __y)
     ^
/usr/include/c++/4.8/bits/stl_stack.h:243:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::stack<_Tp, _Seq>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/c++/4.8/stack:60,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_deque.h:1957:5: note: template<class _Tp, class _Alloc> bool std::operator==(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&)
     operator==(const deque<_Tp, _Alloc>& __x,
     ^
/usr/include/c++/4.8/bits/stl_deque.h:1957:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::deque<_Tp, _Alloc>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/c++/4.8/stack:60,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_deque.h:254:5: note: template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator==(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&)
     operator==(const _Deque_iterator<_Tp, _RefL, _PtrL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_deque.h:254:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/deque:64:0,
                 from /usr/include/c++/4.8/stack:60,
                 from paranteze3.cpp:2:
/usr/include/c++/4.8/bits/stl_deque.h:247:5: note: template<class _Tp, class _Ref, class _Ptr> bool std::operator==(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&)
     operator==(const _Deque_iterator<_Tp, _Ref, _Ptr>& __x,
     ^
/usr/include/c++/4.8/bits/stl_deque.h:247:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::_Deque_iterator<_Tp, _Ref, _Ptr>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/locale_facets.h:48:0,
                 from /usr/include/c++/4.8/bits/basic_ios.h:37,
                 from /usr/include/c++/4.8/ios:44,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/streambuf_iterator.h:204:5: note: template<class _CharT, class _Traits> bool std::operator==(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)
     operator==(const istreambuf_iterator<_CharT, _Traits>& __a,
     ^
/usr/include/c++/4.8/bits/streambuf_iterator.h:204:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::istreambuf_iterator<_CharT, _Traits>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2519:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2519:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   mismatched types 'const _CharT*' and 'char'
                     if(!a.empty() && a.top() == '[')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2507:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator==(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2507:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   mismatched types 'const _CharT*' and 'std::basic_string<char>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2493:5: note: template<class _CharT> typename __gnu_cxx::__enable_if<std::__is_char<_Tp>::__value, bool>::__type std::operator==(const std::basic_string<_CharT>&, const std::basic_string<_CharT>&)
     operator==(const basic_string<_CharT>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2493:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   mismatched types 'const std::basic_string<_CharT>' and 'char'
                     if(!a.empty() && a.top() == '[')

                                                 ^
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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2486:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator==(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2486:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   mismatched types 'const std::basic_string<_CharT, _Traits, _Alloc>' and 'char'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/string:41:0,
                 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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:133:5: note: template<class _Tp> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_CharT>&)
     operator==(const allocator<_Tp>&, const allocator<_Tp>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:133:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::allocator<_CharT>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/string:41:0,
                 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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:128:5: note: template<class _T1, class _T2> bool std::operator==(const std::allocator<_CharT>&, const std::allocator<_T2>&)
     operator==(const allocator<_T1>&, const allocator<_T2>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:128:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::allocator<_CharT>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1037:5: note: template<class _Iterator> bool std::operator==(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator==(const move_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1037:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::move_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:1031:5: note: template<class _IteratorL, class _IteratorR> bool std::operator==(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator==(const move_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:1031:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::move_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:341:5: note: template<class _IteratorL, class _IteratorR> bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator==(const reverse_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:341:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:291:5: note: template<class _Iterator> bool std::operator==(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator==(const reverse_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:291:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_pair.h:214:5: note: template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^
/usr/include/c++/4.8/bits/stl_pair.h:214:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::pair<_T1, _T2>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/iosfwd:40:0,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/postypes.h:216:5: note: template<class _StateT> bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
     operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
     ^
/usr/include/c++/4.8/bits/postypes.h:216:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const std::fpos<_StateT>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33:0,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 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/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/ext/new_allocator.h:139:5: note: template<class _Tp> bool __gnu_cxx::operator==(const __gnu_cxx::new_allocator<_Tp>&, const __gnu_cxx::new_allocator<_Tp>&)
     operator==(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
     ^
/usr/include/c++/4.8/ext/new_allocator.h:139:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const __gnu_cxx::new_allocator<_Tp>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:811:5: note: template<class _Iterator, class _Container> bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)
     operator==(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:811:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const __gnu_cxx::__normal_iterator<_Iterator, _Container>'
                     if(!a.empty() && a.top() == '[')

                                                 ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/4.8/bits/char_traits.h:39,
                 from /usr/include/c++/4.8/ios:40,
                 from /usr/include/c++/4.8/istream:38,
                 from /usr/include/c++/4.8/fstream:38,
                 from paranteze3.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:805:5: note: template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator==(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)
     operator==(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:805:5: note:   template argument deduction/substitution failed:
paranteze3.cpp:33:49: note:   'std::basic_string<char>' is not derived from 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>'
                     if(!a.empty() && a.top() == '[')

                                                 ^

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 Paranteze3 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.