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 Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.util.*;

public class Main {
  public static void main(String[] args){
    List<String> l = new ArrayList<>();
    l.add("A");
    l.add("B");
    l.add("C");
    l.add("D");
    l.add("E");
    l.add("F");
    l.add("G");
    l.add("H");
    l.add("I");
    l.add("J");
    l.add("K");
    l.add("L");
    l.add("N");
    l.add("M");
    l.add("O");
    l.add("P");
    l.add("Q");
    l.add("R");
    l.add("S");
    l.add("T");
    l.add("U");
    l.add("V");
    l.add("W");
    l.add("X");
    l.add("Y");
    l.add("Z");


    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    String[] b = sc.next().split("");

    for (String s : b) {
      if(s.equals("")) continue;
      int c = l.indexOf(s);
      System.out.println(l.get((c+a)%26 + 1));
    }

    sc.close();
  }
}