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 (GCC 5.4.1) (judge verdict: Runtime Error)

#include <stdio.h>
#include <string.h>

int main() {
	char word[1000], backword[1000], formerword[1000];
	int wordnumber, cutnumber;
	int i, j;
	
	scanf("%d", &cutnumber);
	
	scanf("%s", word);
	
	wordnumber = strlen(word);
	
	for(i = 0;i < cutnumber;i++) {
		backword[i] = word[i];
	}
	
	for(j = 0;i < wordnumber;i++) {
		formerword[j] = word[i];
		j++;
	}
	
	strcat(formerword, backword);
	
	printf("%s\n", formerword); 
	
	return 0;
}