Compilare: main.cpp: In function 'void apm()': main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp: In function 'int dfs(int, int, int)': main.cpp:72:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int i = 0; i < graph[node].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~