Compilare: main.cpp: In function 'int main()': main.cpp:36:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(int k=0; k<costuri_hamilton[j].size(); k++) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:39:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int i=0; i<costuri_hamilton[0].size(); i++) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~