N = int(input())
S = input()
plus = N % 26
result = ''
for c in S:
    next = ord(c) + plus
    result += chr(next - 26) if next > 90 else chr(next)
print(result)

3bac8bac4be49e9fc83494c5cfb0fa7c744853bf
<mask token>

<mask token>
for c in S:
    next = ord(c) + plus
    result += chr(next - 26) if next > 90 else chr(next)
print(result)

N = int(input())
S = input()
plus = N % 26
result = ''
for c in S:
    next = ord(c) + plus
    result += chr(next - 26) if next > 90 else chr(next)
print(result)
