Eroare de compilare: user.cpp: In function ‘void calc_suma(int)’: user.cpp:11:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i ++) { ^ user.cpp: In function ‘void dinamica(int)’: user.cpp:22:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i ++) { ^ user.cpp:30:35: error: no match for ‘operator+’ (operand types are ‘std::pair<int, int>’ and ‘std::pair<int, int>’) d[nod] = sol[v[nod].size()-1] + sol[v[nod].size()-2] ^ user.cpp:30:35: note: candidates are: 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 user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template<class _Iterator> std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&) operator+(typename reverse_iterator<_Iterator>::difference_type __n, ^ /usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template argument deduction/substitution failed: user.cpp:30:56: note: ‘std::pair<int, int>’ is not derived from ‘const std::reverse_iterator<_Iterator>’ d[nod] = sol[v[nod].size()-1] + sol[v[nod].size()-2] ^ 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 user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template<class _Iterator> std::move_iterator<_Iterator> std::operator+(typename std::move_iterator<_Iterator>::difference_type, const std::move_iterator<_Iterator>&) operator+(typename move_iterator<_Iterator>::difference_type __n, ^ /usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template argument deduction/substitution failed: user.cpp:30:56: note: ‘std::pair<int, int>’ is not derived from ‘const std::move_iterator<_Iterator>’ d[nod] = sol[v[nod].size()-1] + sol[v[nod].size()-2] ^ 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 user.cpp:1: /usr/include/c++/4.8/bits/basic_string.h:2365:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_string<_CharT, _Traits, _Alloc> 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:2365:5: note: template argument deduction/substitution failed: user.cpp:30:56: note: ‘std::pair<int, int>’ is not derived from ‘const std::basic_string<_CharT, _Traits, _Alloc>’