a = input()
print((len(a) % 2 != 1))
print(a[::2].count(" "))
print(2 * len(a.replace(" ", "")) - 1 != len(a))
print(
    "YNeos"[
        (
            len(a) % 2 != 1
            or a[::2].count(" ") != 0
            or 2 * len(a.replace(" ", "")) - 1 != len(a)
        ) :: 2
    ]
)