foo.cc: In function 'int main()':
foo.cc:37:18: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=]
     scanf("%d",&n);
                ~~^
foo.cc:39:27: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=]
         for (scanf("%d",&i);i>0;i--)
                         ~~^
foo.cc:41:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long int*' [-Wformat=]
             scanf("%d",&y);
                        ~~^
foo.cc:51:38: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=]
             printf("%d",a[x][r[x]][y]);
                         ~~~~~~~~~~~~~^
foo.cc:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
foo.cc:39:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for (scanf("%d",&i);i>0;i--)
              ~~~~~^~~~~~~~~
foo.cc:41:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&y);
             ~~~~~^~~~~~~~~

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