Compilare: main.cpp: In function 'int main()': main.cpp:22:21: warning: comparison of integer expressions of different signedness: 'std::priority_queue<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 22 | while (q.size ()==n) | ~~~~~~~~~^~~ main.cpp:33:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 33 | if (l.size ()==n) | ~~~~~~~~~^~~ main.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (i=0; i<l.size (); i++) | ~^~~~~~~~~~ main.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if (p[nr]<v[nr].size ()) | ~~~~~^~~~~~~~~~~~~~ main.cpp:44:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for (i=0; i<sol.size (); i++) | ~^~~~~~~~~~~~