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 Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.util.Scanner;


public class Main {
	
	public static void main(String[] args) {
	    
		Scanner sc = new Scanner(System.in);
      	int N = sc.nextInt();
      	String str = sc.next();
        StringBuilder strn = new StringBuilder(str);
          	
      	for(int i=0;i<str.length();i++){
            int temp = (int)str.charAt(i) + N;
            String temp_char = "";
            if(temp <= 90)
        	    temp_char += (char)temp;
            else 
                temp_char += (char)(temp - 26);
            
            strn.replace(i, i + 1, temp_char);
        }
      	System.out.println(strn);
		
    }
	
}