foo.c: In function 'main':
foo.c:83:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
         scanf("%d%d%d%d", &a0, &a1,  &b0, &b1);
                ~^         ~~~
                %lld
foo.c:83:19: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'long long int *' [-Wformat=]
         scanf("%d%d%d%d", &a0, &a1,  &b0, &b1);
                  ~^            ~~~
                  %lld
foo.c:83:21: warning: format '%d' expects argument of type 'int *', but argument 4 has type 'long long int *' [-Wformat=]
         scanf("%d%d%d%d", &a0, &a1,  &b0, &b1);
                    ~^                ~~~
                    %lld
foo.c:83:23: warning: format '%d' expects argument of type 'int *', but argument 5 has type 'long long int *' [-Wformat=]
         scanf("%d%d%d%d", &a0, &a1,  &b0, &b1);
                      ~^                   ~~~
                      %lld
foo.c:80:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ^~~~~~~~~~~~~~~
foo.c:83:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d%d", &a0, &a1,  &b0, &b1);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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