#!/usr/bin/env python3

from sys import stdin, setrecursionlimit


def main():
    c = stdin.readline()[:-1]
    print(chr(ord(c) + 1))


if __name__ == "__main__":
    setrecursionlimit(10000)
    main()

89ab1666c27547f263cc57a12197e59dd3f6cc94
<mask token>

<mask token>


def main():
    c = stdin.readline()[:-1]
    print(chr(ord(c) + 1))


<mask token>

<mask token>


def main():
    c = stdin.readline()[:-1]
    print(chr(ord(c) + 1))


if __name__ == '__main__':
    setrecursionlimit(10000)
    main()

from sys import stdin, setrecursionlimit


def main():
    c = stdin.readline()[:-1]
    print(chr(ord(c) + 1))


if __name__ == '__main__':
    setrecursionlimit(10000)
    main()

#!/usr/bin/env python3

from sys import stdin, setrecursionlimit


def main():
    c = stdin.readline()[:-1]
    print(chr(ord(c) + 1))


if __name__ == "__main__":
    setrecursionlimit(10000)
    main()
