Compilare: main.cpp: In function 'void DFS(int)': main.cpp:31:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<graf[NODE].size();++i) ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void DFST(int)': main.cpp:42:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<graft[NODE].size();++i) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Read()': main.cpp:18:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^ main.cpp:22:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&X,&Y); ^