#!/usr/bin/env python
from __future__ import print_function

import sys


def main(sysargs=sys.argv[:]):
    d = {}
    for c in (65, 97):
        for i in range(26):
            d[chr(i+c)] = chr((i+13) % 26 + c)

    print(
        "".join([
            d.get(c, c) for c in " ".join(sysargs[1:])
        ]),
        end=""
    )
    
    return 0


if __name__ == "__main__":
    sys.exit(main())
