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;


public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        //System.out.print("入力してください > ");
        //int    x = Integer.parseInt(scanner.nextLine());
        //int n = Integer.parseInt(scanner.nextLine());
        //String d = scanner.nextLine();
       
        int n    =  Integer.parseInt(scanner.nextLine());
        String s =  scanner.nextLine();
        
        char[] ss = s.toCharArray();
        
        for(int i = 0 ; i < ss.length ; i++){
            ss[i] = inc(ss[i],n);
        }
        
        System.out.println(new String(ss));
        // Scannerクラスのインスタンスをクローズ
        scanner.close();
    }
    
    private static char inc(char c, int n){
        
        char ret = c;
        for(int i = 0 ; i < n ; i ++){
            if(ret == 'z'){
                ret = 'a';
            }
            else if(ret == 'Z'){
                ret = 'A';
            }
            else{
                ret++;
            }
        }
        return ret;
        
    }
}