/in/foo.c: In function 'main':
/in/foo.c:14:11: warning: too many arguments for format [-Wformat-extra-args]
    printf("YES\n",num);
           ^~~~~~~
/in/foo.c:17:12: warning: too many arguments for format [-Wformat-extra-args]
  {  printf("NO\n",num);
            ^~~~~~