Your task is to put in the output nth character of the read input. You have to use BF.

Input

• First line have x chars (1 <= x <= 99) and ends with a line feed (10)
• Second line is one number n (00 <= n <= 99)

Output

It's only one character.

Example

Input:
01234567
02

Output:
2

Input:
0112ok3-12kewpl11,2eo12o3ke12ls12w1io2j34e12md
14

Output:
l