foo.c: In function 'fun':
foo.c:4:12: warning: variable 'k' set but not used [-Wunused-but-set-variable]
4 | int i,j=1,k=a[0],m,flag=0;
| ^
foo.c: In function 'main':
foo.c:27:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
27 | scanf("%d%d",&n,&m);
| ^~~~~~~~~~~~~~~~~~~
foo.c:29:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
29 | scanf("%d",&a[i]);
| ^~~~~~~~~~~~~~~~~
foo.c:31:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
31 | scanf("%d",&b[i]);
| ^~~~~~~~~~~~~~~~~
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