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 Kotlin (1.3.71) (judge verdict: Accepted)

fun main (args:Array<String>){
    val num = readLine()!!.toInt()
    var strAlpha = readLine()!!
    val alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    for(i in 0..strAlpha.length-1){
        var strAlphaIndex = alpha.indexOf(strAlpha[i]) + num
        if(strAlphaIndex > 25){
            print(alpha[strAlphaIndex - 26])
            continue
        }
        print(alpha[strAlphaIndex])
    }
}