Submit Dile AC Hobe Na

Competitive Programming is very popular in Bangladesh. Shuvo is a contestant from DIU-SWE. His department is going to organize a Programming Contest for the junior contestant. Now Shuvo has to set a problem for the contest.

As Shuvo is an intelligent contestant, he wants to set a difficult problem as if no one can solve the problem. After thinking a few hours he gets a great idea of the problem.

Now think that there are $N$ people in two groups and every person have an $\texttt{ID Number}$ ($1 \le \texttt{ID Number} \le 100$). The groups are created by the people according to their behaviors. In this problem, you have to count the number of $\texttt{Common ID}$ in two groups.

Input

The first line contains one integer $N$ ($1 \le N \le 100$) – the number of people in each group.

The second line contains $\texttt{ID Numbers}$ of $N$ people from the first group.

The third line contains $\texttt{ID Numbers}$ of $N$ people from the second group.

Output

Print one integer – the number of $\texttt{Common ID}$ from two groups.

Samples

Input	Output
5 1 3 6 15 21 3 8 15 19 25	2
The answer will be 2 because 3 and 15 are the common numbers in the two groups.

Input	Output
1 43 69	0
Since there is no common number the answer will be 0.