from __future__ import print_function
import sys
import os.path
import math
import collections
if os.path.isfile("test.inp"):
    sys.stdin = open("test.inp", "r")
    sys.stdout = open("test.out", "w")
elif os.path.isfile("simplebool.inp"):
    sys.stdin = open("simplebool.inp", "r")
    sys.stdin = open("simplebool.out", "w")
def eprint(*args, **kwargs):
    print(*args, file=sys.stderr, **kwargs)
def erange (a, b):
    return range (a, b + 1)
ntest = 1
#ntest = int(input())
def myfunc(*args1):
    args = ''.join (args1)
    s = str ()
    for i in range(len(args)):
        if (i % 2 == 0):
            s += args[i].upper()
        else:
            s += args[i].lower()
    return s
print(myfunc('hello'))
    