Contest: Task: Related: TaskB

Score : $100$ points

Find the $X$-th character from the beginning of the string that is obtained by concatenating these characters: $N$ copies of `A`

's, $N$ copies of `B`

's, …, and $N$ copies of `Z`

's, in this order.

- $1 \leq N \leq 100$
- $1 \leq X \leq N\times 26$
- All values in input are integers.

Input is given from Standard Input in the following format:

$N$ $X$

Print the answer.

1 3

C

We obtain the string `ABCDEFGHIJKLMNOPQRSTUVWXYZ`

, whose $3$-rd character from the beginning is `C`

.

2 12

F

We obtain the string `AABBCCDDEEFFGGHHIIJJKKLLMMNNOOPPQQRRSSTTUUVVWWXXYYZZ`

, whose $12$-th character from the beginning is `F`

.