Compilare: main.cpp: In function 'void dfs(int)': main.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:60:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=k;i++) ^~~ main.cpp:62:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fo<<p1; ^~