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(void) {
	int n, q;
	int cnt = 0;
	int s[100000] = { 0 };
	int t[50000] = { 0 };
	int i, j;

	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]);
		for (j = 0; j < i; j++) {
			if (t[i] == t[j]) {
				i--;
				break;
			}
		}
	}

	for (i = 0; i < q; i++) {
		for (j = 0; j < n; j++) {
			if (t[i] == s[j]) {
				cnt++;
				break;
			}
		}
	}

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

	return 0;
}