Compilare: main.cpp: In function 'void dfs(int)': main.cpp:21:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<L[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<C[i].size();j++) ~^~~~~~~~~~~~ main.cpp:61:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=0;j<C[i].size();j++) ^~~ main.cpp:63:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout<<"\n"; ^~~~