S = input()
# Sがkadomatsuの部分列であればOK

T = "kadomatsu"

s_ind = 0
t_ind = 0
while s_ind < len(S):
  while T[t_ind] != S[s_ind]:
    t_ind += 1
    if t_ind == len(T):
      print("No")
      exit(0)
  s_ind += 1
print("Yes")