Compilare: main.cpp: In function 'void dfs(int)': main.cpp:7:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:27:7: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(viz[j]==0&&b[j]==1)k1++;viz[j]=0; ^~ main.cpp:27:34: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(viz[j]==0&&b[j]==1)k1++;viz[j]=0; ^~~