s = eval(input())

print((chr(ord(s)+1)))
import sys

readline = sys.stdin.buffer.readline

def even(n): return 1 if n%2==0 else 0



s = readline().rstrip().decode('utf-8')

print((chr(ord(s)+1)))
s = eval(input())
print((chr(ord(s) + 1)))

import sys

readline = sys.stdin.buffer.readline


def even(n):
    return 1 if n % 2 == 0 else 0


s = readline().rstrip().decode("utf-8")
print((chr(ord(s) + 1)))

-s = eval(input()) +import sys + +readline = sys.stdin.buffer.readline + + +def even(n): +    return 1 if n % 2 == 0 else 0 + + +s = readline().rstrip().decode("utf-8")