Compilare: main.cpp: In function 'int main()': main.cpp:60:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<graph[no].size();++j) ~^~~~~~~~~~~~~~~~~ main.cpp:53:17: warning: unused variable 'nr' [-Wunused-variable] int no,cate,nr=0; ^~ main.cpp:28:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&cap,&p,&k); ^ main.cpp:30:55: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v[i].d,&v[i].c),pd[i][i]=INF; ^ main.cpp:34:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^