/in/foo.cc: In function 'int main()':
/in/foo.cc:11:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   11 |         printf("%d",abs(x2-x1)+abs(y2-y1));
      |                 ~^  ~~~~~~~~~~~~~~~~~~~~~
      |                  |            |
      |                  int          long long int
      |                 %lld