Compilare: main.cpp: In function 'int main()': main.cpp:38:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&k); ^ main.cpp:41:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&x,&y); ^ main.cpp:51:10: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(fout,"%d",d[root][1]); ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~