Compilare: main.cpp: In function 'int main()': main.cpp:33:19: warning: comparison of integer expressions of different signedness: 'std::priority_queue<int, std::vector<int>, Compare>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 33 | while(Q.size()!=k+1) | ~~~~~~~~^~~~~ main.cpp:36:7: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 36 | for(vector<int>::iterator it = G[nod].begin(); it < G[nod].end(); it++) | ^~~ main.cpp:38:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 38 | Q.pop(); | ^