Compilare: main.cpp: In function 'void nocostDFS(int, int, int)': main.cpp:21:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 0;i < g[node].size();i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'll DFS(int, int, ll)': main.cpp:38:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int i = 0;i < g[node].size();i++) { | ~~^~~~~~~~~~~~~~~~