Compilare: main.cpp: In function 'void dfs(int)': main.cpp:15:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int it=0;it<v[nod].size();it++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:49:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<v[nd].size();t++) ~^~~~~~~~~~~~~ main.cpp:94:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vect.size();i++) ~^~~~~~~~~~~~ main.cpp:26:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ main.cpp:33:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&a,&b); ^