My program:
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
long long i,j,n,m,count=0,aa;
bool a[1000000001];
int main()
{
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    //memset(a,false,sizeof(a));
    scanf("%lld",&n);
    for(i=1;i<=n;i++)
    {
          scanf("%lld",&aa);
          a[aa]=true;
          }
    scanf("%lld",&m);
    for(i=1;i<=m;i++)
    {
          scanf("%lld",&aa);
          if(a[aa]==true)  count++;
          }
    printf("%lld",count);
    //system("pause");
    return 0;
}

It said that "Runtime error (access violation)" in test 10,so why?Please help!!!