Accepted
foo.c: In function 'main':
foo.c:29:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
29 | scanf("%d %d", &n, &k);
| ^~~~~~~~~~~~~~~~~~~~~~
foo.c:31:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
31 | scanf("%d", &a[i]);
| ^~~~~~~~~~~~~~~~~~
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