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 PyPy3 (2.4.0) (judge verdict: Accepted)


n = int(input())
s = input()
# 26(25)
tmp = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

a_L = [val for val in tmp]
ans = ""
for val in s:
    i = a_L.index(val)
   
    if i+n >= 26:
        aa = i+n - 26
        #print("aaaa") 
    else:
        aa = i + n
    #print(aa)
    ans += a_L[aa]
print(ans)
#a,b = map(int,input().split())
#a_L = map(int,input().split())