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++ (Clang 3.8.0) (judge verdict: Accepted)

#include<iostream>
#include<string>
using namespace std;

int main(){
    int n;
    string s;;

    cin >> n;
    cin >> s;

    int len = s.size();

    for (int i = 0; i < len; i++){
        for (int j = 1; j <= n; j++){
            if (s[i] == 'Z') s[i] = 'A';
            else s[i] += 1;
        }
    }

    cout << s << endl;

    return 0;
}