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

    for i in range(len(X)):
        Y=X[:i]+X[i+1:]
        if S==X[:i]+X[i+1:]:
            return True
    return False
X="kadomatsu"
S=input()
print("Yes" if f(S) else "No")

if f(S):
    y=1/0