foo.c: In function 'ss':
foo.c:9:13: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
    9 |  for(i=2;i<=sqrt(n);i++)
      |             ^~~~
foo.c:9:13: warning: incompatible implicit declaration of built-in function 'sqrt'
foo.c:2:1: note: include '<math.h>' or provide a declaration of 'sqrt'
    1 | #include <stdio.h>
  +++ |+#include <math.h>
    2 | #define N 10000
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",&n1);
      |  ^~~~~~~~~~~~~~~
foo.c:28:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   28 |  scanf("%d",&n2);
      |  ^~~~~~~~~~~~~~~
foo.c:30:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   30 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c:32:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   32 |   scanf("%d",&b[i]);
      |   ^~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务