Eroare de compilare: user.cpp: In function ‘void nou(int, int, int, int, std::vector<std::pair<int, int> >&, std::vector<std::pair<int, int> >&)’: user.cpp:10:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v1.size();i++) ~^~~~~~~~~~ user.cpp:11:16: error: request for member ‘first’ in ‘i’, which is of non-class type ‘int’ if(!(i.first>=linie1&&i.first<=linie2&&i.second>=coloana1&&i.second<=coloana2)) ^~~~~ user.cpp:11:33: error: request for member ‘first’ in ‘i’, which is of non-class type ‘int’ if(!(i.first>=linie1&&i.first<=linie2&&i.second>=coloana1&&i.second<=coloana2)) ^~~~~ user.cpp:11:50: error: request for member ‘second’ in ‘i’, which is of non-class type ‘int’ if(!(i.first>=linie1&&i.first<=linie2&&i.second>=coloana1&&i.second<=coloana2)) ^~~~~~ user.cpp:11:70: error: request for member ‘second’ in ‘i’, which is of non-class type ‘int’ if(!(i.first>=linie1&&i.first<=linie2&&i.second>=coloana1&&i.second<=coloana2)) ^~~~~~