Compilare: main.cpp: In function 'void dijkstra(int, int)': main.cpp:19:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for (int i = 0; i < grf[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int Hamilton(int)': main.cpp:36:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int mask=2;mask<dp.size();mask++) | ~~~~^~~~~~~~~~