foo.c: In function 'main':
foo.c:4:6: warning: unused variable 'n' [-Wunused-variable]
    4 |  int n,m,sum=0,y;
      |      ^
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d %d",&q,&b);
      |  ^~~~~~~~~~~~~~~~~~~~

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