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A - ^{-1}

Score : $100$ points

Problem Statement

You are given a sequence $P$ that is a permutation of $(1,2,…,N)$, and an integer $X$. The $i$-th term of $P$ has a value of $P_i$. Print $k$ such that $P_k = X$.

Constraints

• $1 \leq N \leq 100$
• $1 \leq X \leq N$
• $P$ is a permutation of $(1,2,…,N)$.
• All values in the input are integers.

Input

The input is given from Standard Input in the following format:

$N$ $X$

$P_1$ $P_2$ $\ldots$ $P_N$

Output

Print the answer.

4 3
2 3 1 4

2

We have $P = (2,3,1,4)$, so $P_2 = 3$. Thus, you should print $2$.

5 2
3 5 1 4 2

5

6 6
1 2 3 4 5 6

6