def jiami(c):
    if c=='z':
        return 'a'
    elif c=='Z':
        return 'A'
    elif c.isalpha():
        return chr(ord(c)+1)
    else:
        return c
str1=input().strip()
for item in str1:
    print(jiami(item),end="")



/**************************************************************
	Problem: 1402
	User: admin
	Language: Python
	Result: Accepted
	Time:139 ms
	Memory:34244 kb
****************************************************************/