Compilare: main.cpp: In function 'void bkt(int, int)': main.cpp:24:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | while (wher < v.size() && (ok[v[wher].first] || ok[v[wher].second])) | ~~~~~^~~~~~~~~~ main.cpp:26:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if ((k > ans.size() || wher == v.size()) && wher != m) { | ~~^~~~~~~~~~~~ main.cpp:26:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if ((k > ans.size() || wher == v.size()) && wher != m) { | ~~~~~^~~~~~~~~~~