foo.c: In function 'main':
foo.c:10:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
10 | scanf("%d %d %d", &m, &n, &p);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:12:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
12 | scanf("%d", &a[i]);
| ^~~~~~~~~~~~~~~~~~
foo.c:14:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
14 | scanf("%d", &b[i]);
| ^~~~~~~~~~~~~~~~~~
foo.c:16:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
16 | scanf("%d", &c[i]);
| ^~~~~~~~~~~~~~~~~~
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