Compilare: main.cpp: In function 'int main()': main.cpp:150:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 150 | while (poz < unde1.size() and unde1[poz] == aux) | ~~~~^~~~~~~~~~~~~~ main.cpp:162:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 162 | while (p2 < unde2.size() and ups[unde2[p2].first][unde2[p2].second] >= INT_MAX) | ~~~^~~~~~~~~~~~~~ main.cpp:172:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 172 | while (poz < unde2.size() and unde2[poz] == aux) | ~~~~^~~~~~~~~~~~~~ main.cpp:175:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 175 | if (poz < unde2.size()) | ~~~~^~~~~~~~~~~~~~ main.cpp:174:29: warning: variable 'a' set but not used [-Wunused-but-set-variable] 174 | pair <int, int> a = unde2[poz]; | ^