Compilare: main.cpp: In function 'void dfs(int, int, int)': main.cpp:11:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:14:6: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(!viz[vecin]) ^~ main.cpp:17:10: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(nr==n && v[nod][i].first==1) ^~