def f(S):
    X="kadomatsu"
    if X==S:
        return True

    if S in {"adomatsu","kdomatsu","kaomatsu","kadmatsu","kadoatsu","kadomtsu","kadomasu","kadomatu","kadomats"}:
        assert 0
        return True
    else:
        return False

S=input()
print("Yes" if f(S) else "No")