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>
 #include<string.h>
 int main(void)
 {
     char S[10000];
     int N,s,i;

     scanf("%d",&N);
     scanf("%s",S);
     s=strlen(S);

     for(i=0;i<s;i++){
       if((S[i]>='A')&&(S[i]<='Z')){
        S[i]=((S[i]-'A')+N)%26+'A';
          printf("%c",S[i]);
         }
     }
     printf("\n");

     return 0;
 }