Problem:
Score : 200 points

Problem Statement

We have a string S consisting of uppercase English letters. Additionally, an integer N will be given.

Shift each character of S by N in alphabetical order (see below), and print the resulting string.

We assume that A follows Z. For example, shifting A by 2 results in C (A \to B \to C), and shifting Y by 3 results in B (Y \to Z \to A \to B).

Constraints

0 \leq N \leq 26

1 \leq |S| \leq 10^4

S consists of uppercase English letters.

Input

Input is given from Standard Input in the following format:

N
S

Output

Print the string resulting from shifting each character of S by N in alphabetical order.

Sample Input 1

2
ABCXYZ

Sample Output 1

CDEZAB

Note that A follows Z.

Sample Input 2

0
ABCXYZ

Sample Output 2

ABCXYZ

Sample Input 3

13
ABCDEFGHIJKLMNOPQRSTUVWXYZ

Sample Output 3

NOPQRSTUVWXYZABCDEFGHIJKLM

Solution in PHP7 (7.0.15) (judge verdict: Accepted)

<?php
    fscanf(STDIN,"%d",$N);
    fscanf(STDIN,"%s",$S);

    // $list_a = explode(" ", trim(fgets(STDIN)));



    for($i=0;$i<strlen($S);$i++){
        $jyushin = ord($S[$i]);
        if($jyushin+$N > 90){
            $S[$i]= chr(65+$N+$jyushin-90-1);
        }else{
            $S[$i] = chr($jyushin+$N);
        }
    }

    echo $S."\n";