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: Accepted)

import java.util.Scanner;

class Main {
    public static void main(String[] args) {

        try (Scanner sc = new Scanner(System.in)) {
            int N = Integer.parseInt(sc.nextLine());
            String S = sc.next();
            StringBuilder result = new StringBuilder();

            for (int i = 0; i < S.length(); i++){
                int ascii = (int)S.charAt(i);
                ascii = ascii + N;
                if (ascii > (int)'Z') {
                    ascii = ascii % (int)'Z' + (int)'A' -1;
                }
                result.append((char)ascii);
            }
            System.out.println(result.toString());
        }
    }
}