Compilare: main.cpp: In function 'void dfs(int)': main.cpp:38:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int i = 0; i < adj[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for (i = 0; i < adj[x].size(); ++i) | ~~^~~~~~~~~~~~~~~ main.cpp:80:17: warning: unused variable 'd' [-Wunused-variable] 80 | int d = q.top().dist; | ^