Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (i = 0; i< l[nod].size(); i++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void bellman_ford()': main.cpp:38:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (i = 0; i<= l[nod].size(); i++) | ~^~~~~~~~~~~~~~~~