Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:21:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < v[node].size(); ++i) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int j = 0; j < g[c[l]].size(); ++j) { | ~~^~~~~~~~~~~~~~~~