Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:14:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=niv;i++) ^~~ main.cpp:16:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' sum[nod]=1; ^~~ main.cpp:19:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<L[nod].size();j++){ ~^~~~~~~~~~~~~~