n=int((input())

if n==1:
  print(1)
else:
  ans="1"
  for i in range(2,n+1):
      for j in range(1,i+1):
        ans.count()
        


n=int((input())

if n==1:
  print(1)
else:
  ans="1"
  for i in range(2,n+1):
      for j in range(1,i+1):
        ans.count()
        

