Problem:
Search II

You are given a sequence of n integers S and a sequence of different q integers T. Write a program which outputs C, the number of integers in T which are also in the set S.

Input

In the first line n is given. In the second line, n integers are given. In the third line q is given. Then, in the fourth line, q integers are given.

Output

Print C in a line.

Constraints

Elements in S is sorted in ascending order

n ≤ 100000

q ≤ 50000

0 ≤ an element in S ≤ 109

0 ≤ an element in T ≤ 109

Sample Input 1

5
1 2 3 4 5
3
3 4 1

Sample Output 1

3

Sample Input 2

3
1 2 3
1
5

Sample Output 2

0

Sample Input 3

5
1 1 2 2 3
2
1 2

Sample Output 3

2

Notes

Solution in C (judge verdict: Time Limit Exceeded)

#include<stdio.h>
#define NUM 1000000

int main(){
  
  int n,S[NUM],q,T[NUM];
  int i,j;
  int count = 0;
  int a[NUM];
  
  scanf("%d",&n);
  
  for(i=0;i<n;i++){
    scanf("%d",&S[i]);
  }

  scanf("%d",&q);
  
  for(i=0;i<q;i++){
    scanf("%d",&T[i]);
    a[i] = 0;
  }    
  
  for(i=0;i<n;i++){
    for(j=0;j<q;j++){
      if(S[i] == T[j]){
	a[j]++;
	if(a[j]<2){
	  count++;
	  break;
	}
	
      }
    }
  }
  
  printf("%d\n",count);

  return 0;
}