Ответ:

Объяснение:

a = input()

b = "1234"

f = "200"

s =209

u = 12396

r = "1243"

if a == b:

   print("YES")

elif a == r:

   print("no")

elif a == f:

   print("YES")

elif a == s:

   print("no")

elif a == u:

   print("yes")