Compilare: main.cpp: In function 'void dfs(int)': main.cpp:13:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | for(i=0;i<G[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp:13:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 13 | for(i=0;i<G[nod].size();i++) | ^~~ main.cpp:15:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 15 | v[++k]=nod; | ^