foo.c: In function 'main':
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf("%d%d",&n1,&n2);
      |  ^~~~~~~~~~~~~~~~~~~~~
foo.c:10:1: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   10 | scanf("%d",&a[i]);
      | ^~~~~~~~~~~~~~~~~
foo.c:12:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   12 |  {  scanf("%d",&b[j]); } printf("%d %d",PrimeCount(a,n1),PrimeCount(b,n2)); return 0;}int PrimeCount(int a[],int n){ int x,y,z=0; for(x=0;x<n;x++) {  y=prime(a[x]);  if(y==1)  z++; } return z; }int prime(int n){ int i,x; x=n; for(i=2;i<=n;i++) {  if(x%i==0)  break; } if(i==n&&i!=1) {  return 1; } else {  return 2; }}
      |     ^~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务