Compilare: main.cpp: In function 'void dfs(int)': main.cpp:73:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:93:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d",&cer,&n,&k); ^ main.cpp:95:96: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%lf%lf%lf%lf%lf%lf",&t[i].x1,&t[i].y1,&t[i].x2,&t[i].y2,&t[i].x3,&t[i].y3); ^