output_description: Print the reversed str in a line.
input_description: str (the size of str ≤ 20) is given in a line.
attempt: str = list(input())
  rstr = str[::-1]
  print(*rstr, sep="")
  
problem_description: Reverse Sequence
  
  Write a program which reverses a given string str.
samples: [{"input": "w32nimda", "output": "admin23w"}]