text: #BlueBook code decryption
  import sys
  def sieve(n):
      x = [1] * n
      x[1] = 0
      for i in range(2,n/2):
              j = 2 * i
              while j < n:
                      x[j]=0
                      j = j+i
      return x
  
  def prime(n,x):
      i = 1
      j = 1
      while j <= n:
              if x[i] == 1:
                      j = j + 1
              i = i + 1
      return i - 1
  x=sieve(10000)
  code = [1206,301,384,5]
  key =[1,1,2,2,]
  
  sys.stdout.write("".join(chr(i) for i in [73,83,66,78,32,61,32]))
  for i in range (0,4):
      sys.stdout.write(str(prime(code[i],x)-key[i]))
  
  print