Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i=0; i<G[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:42:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 42 | for(int i=1;i<=n;i++) | ^~~ main.cpp:44:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 44 | D[1]=0; | ^