foo.c:3:5: error: variably modified 'j' at file scope
 int j[MAX]={0};
     ^
foo.c:4:5: error: variably modified 's' at file scope
 int s[MAX]={0};
     ^
foo.c: In function 'main':
foo.c:8:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ^~~~~~~~~~~~~~
foo.c:10:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&t);
         ^~~~~~~~~~~~~~
foo.c:17:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&M);
     ^~~~~~~~~~~~~~
foo.c:19:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&l,&r);
         ^~~~~~~~~~~~~~~~~~~

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