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: Accepted)

#include<stdio.h>

int main(void){
        char array[10000];
        char cmpA[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
        char cmpB[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
        char result[26] = {};
        int i,j,N,count;

        scanf("%d",&N);
        scanf("%s",array);

        for(i = 0; i < 10000;i++){
                if(array[i] == '\0') break;
                for(j = 0; j < 26;j++){
                        if(array[i] == cmpA[j]){
                                if(j + N  >= 26){
                                        result[count] = cmpB[j + N - 26];
                                }else{
                                        result[count] = cmpB[j + N];
                                }
                        }
                }
                count++;
        }
        for(i = 0;i < count;i++){
                printf("%c",result[i]);
        }


        return 0;
}