Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:73:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v.size(); i++ ) ^ user.cpp:74:14: error: no match for ‘operator[]’ (operand types are ‘std::stack<std::pair<int, int> >’ and ‘int’) if( v[i].first == 0 ) ^ user.cpp:75:22: error: expected primary-expression before ‘int’ fout << (int)() ^ user.cpp:75:22: error: expected ‘)’ before ‘int’