Compilare: main.cpp: In function 'void Read()': main.cpp:23:9: warning: unused variable 'i' [-Wunused-variable] int i,X,Y; ^ main.cpp: In function 'void Solve()': main.cpp:72:11: warning: unused variable 'n' [-Wunused-variable] int i,n,Node; ^ main.cpp: In function 'void Displaying()': main.cpp:96:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<ctc[srt[i].ind].size();++j) ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Read()': main.cpp:24:28: 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:28:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&X,&Y); ^