D. Caesar Cipher
time limit per test
2 seconds
memory limit per test
256 megabytes
input
stdin
output
stdout

Caesar cipher is one of the simplest encryption techniques. To transform the original message into encrypted one using key k, one has to replace each letter with a letter which is k positions later in the alphabet (if this takes the position beyond Z, the rest of it is counted from the start of the alphabet). In a more formal way, if letters of the alphabet are enumerated starting with 0, the result of encryption for character x will be (26 is the number of letters in the Latin alphabet).

You are given the original message and the encryption key k. Output the result of encryption.

Input

The first line of input contains an integer k (0 ≤ k ≤ 25) — the encryption key.

The second line contains the original message — a sequence of uppercase Latin letters ('A'-'Z'). The length of the message is from 1 to 10, inclusive.

Output

Output the result of encryption.

Examples
Input
5
CODEFORCES
Output
HTIJKTWHJX
Input
13
FALSERULEZ
Output
SNYFREHYRM