Compilare: main.cpp: In function 'void solve()': main.cpp:12:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i = 0; i<perm.size(); i++) { | ~^~~~~~~~~~~~ main.cpp:14:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int j = i+1; j<perm.size(); j++) { | ~^~~~~~~~~~~~ main.cpp:28:26: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 28 | if(muchii.size() == n-1) { | ~~~~~~~~~~~~~~^~~~~~