output_description: If Takahashi's growth will be celebrated, print `YES`; if it will not, print
  `NO`.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      X
attempt: y=int(input())
  if y==7 or y==5 0r y==3:
    print("YES")
  else:
    print("NO")
problem_description: Statement
  
   _Shichi-Go-San_ (literally "Seven-Five-Three") is a traditional event in a
  certain country to celebrate the growth of seven-, five- and three-year-old
  children.
  
  Takahashi is now X years old. Will his growth be celebrated in Shichi-Go-San
  this time?
samples: [{"input": "5", "output": "YES\n    \n\nThe growth of a five-year-old child will be celebrated.\n\n* * *"}, {"input": "6", "output": "NO\n    \n\nSee you next year."}]