Compilare: main.cpp: In function 'void DFS(int)': main.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for (int i = 0; i < gr[node].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int dijkstra_dubios(int)': main.cpp:73:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | for (int i = 0; i < gr[top.nod].size(); ++i) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:91:1: warning: control reaches end of non-void function [-Wreturn-type] 91 | } | ^