Compilare: main.cpp: In function 'void dfs3(int, int)': main.cpp:105:29: warning: comparison of integer expressions of different signedness: 'std::multiset<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 105 | while (bestK.size() < k) { | ~~~~~~~~~~~~~^~~ main.cpp:119:29: warning: comparison of integer expressions of different signedness: 'std::multiset<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 119 | while (bestK.size() < k) { | ~~~~~~~~~~~~~^~~