/in/foo.c: In function 'main':
/in/foo.c:7:11: warning: format '%ld' expects argument of type 'long int *', but argument 2 has type 'long long int *' [-Wformat=]
  scanf("%ld%ld",&x,&y);
           ^
/in/foo.c:7:14: warning: format '%ld' expects argument of type 'long int *', but argument 3 has type 'long long int *' [-Wformat=]
  scanf("%ld%ld",&x,&y);
              ^
/in/foo.c:15:12: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%ld ",a);
            ^
/in/foo.c:16:12: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%ld",a/x*b);
            ^