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>
#include<string.h>

int N,N2;

int main(){

  int i,j,c=0;

  scanf("%d",&N);

  int s[N];

  for(i=0;i<N;i++){
    scanf("%d",&s[i]);
  }

  scanf("%d",&N2);

  int s2[N2];

  for(i=0;i<N2;i++){
    scanf("%d",&s2[i]);
  }


  for(i=0;i<N2;i++){
    for(j=0;j<N;j++){
      if(s2[i]==s[j]){
        c++;
        break;
      }
      }
    }


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


  return 0;
}