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 C# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

//どうかACをお恵みくださいお願いしますお願いしますお願います何もしませんから
using System;

namespace AtCoder
{
    class Program
    {
        static void Main()
        {
            int N = int.Parse(Console.ReadLine());
            string S = Console.ReadLine();
            int n = S.Length;
            int[] s = new int[n];
            for(int x = 0;x < n;x++)
            {
                s[x] = ((int)S[x] + N -64) % 26 + 64;
                if(s[x]==0)
                {
                    s[x] = 26;
                }
                Console.Write((char)s[x]);
            }
        }
    }
}