Compilare: main.cpp: In function 'void dijkstra()': main.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for( int i = 0; i < adj[x].size(); i++ ){ | ~~^~~~~~~~~~~~~~~