foo.c: In function 'main':
foo.c:29:12: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
int a1,a2;scanf("%d%d",&a1,&a2);
^~~~~~~~~~~~~~~~~~~~~
foo.c:32:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&a[i]);
^~~~~~~~~~~~~~~~~
foo.c:36:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&b[i]);
^~~~~~~~~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务