text: i = 4
  d = 4.0
  s = 'HackerRank '
  # Read and save an integer, double, and String to your variables.
  inI = int(input())
  inD = float(input())
  inS = input()
  # Print the sum of both integer variables on a new line.
  print(inI + i)
  # Print the sum of the double variables on a new line.
  print('{:.1f}'.format(inD+d))
  # Concatenate and print the String variables on a new line
  # The 's' variable above should be printed first.
  print(''.join([s, inS]))