ham = ["ham", "hamu"]
zo = {"ham": 0, "hamu": 1}
n = input()
x = 0
while len(n) > 0:
    if n.startswith(ham[1]):
        x *= 2
        x += 1
        n = n[4:]
    else:
        x *= 2
        n = n[3:]
x *= 2
gyaku = []
if x == 0:
    print("ham")
    exit()
while x > 0:
    gyaku.append(ham[x % 2])
    x //= 2
print("".join(gyaku[::-1]))