Compilare: user.cpp:1:18: warning: extra tokens at end of #include directive [enabled by default] #include <cstdio> ^ user.cpp: In function ‘void DFS(int)’: user.cpp:17:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:26:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&N,&M); ^ user.cpp:33:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d",&val[i]),h[i]=h[val[i]]+1; ^ user.cpp:49:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&X,&Y); ^