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>


int main(){

  int n,q,S[100000],T[100000],i,count=0,left,right,mid;

  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]);
      left=0;
      right=n;
      while(1){
	
      if(left>right)	break;

      mid=(left+right)/2;
      // printf("%d\n",mid);
      if(S[mid]==T[i]){
	count++;
	break;
      }
      else if(T[i]<S[mid])
	
	right=mid;

      else  left=mid+1;
      
      }
  }
  

  printf("%d\n",count);

  return 0;
}