output_description: Print the reversed str in a line.
input_description: str (the size of str ≤ 20) is given in a line.
attempt: S = input()
  N = len(S)
  for i in range(N):
      print(S[N - i - 1], end="")
  print("")
  
problem_description: Reverse Sequence
  
  Write a program which reverses a given string str.
samples: [{"input": "w32nimda", "output": "admin23w"}]