S = input()
# Sがkadomatsuの部分列であればOK

T = "kadomatsu"

Tind = 0
for s in S:
  while Tind < len(T) and s != T[Tind]:
    Tind += 1
  if Tind == len(T):
    print("No")
    break
else:
  print("Yes")