Compilare: user.cpp: In function ‘void BFS()’: user.cpp:27:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘void DFS(int)’: user.cpp:58:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Fwd[node].size();i++) ^ user.cpp: In function ‘void Compress(int)’: user.cpp:66:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Bkd[source].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:88:28: 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:93:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d%d",&X,&Y,&C); ^