Wrong Answer
foo.c: In function 'main':
foo.c:5:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d",&n,&k);
^~~~~~~~~~~~~~~~~~~~
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foo.c: In function 'main':
foo.c:5:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d",&n,&k);
^~~~~~~~~~~~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务
