foo.c: In function 'main':
foo.c:10:12: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%ld",q);
          ~~^
          %lld
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld%lld",&a,&b,&c,&d);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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