output_description: Print the letter that follows C in alphabetical order.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      C
attempt: from collections import defaultdict
  
  
  def solve():
      N = input()
      d = defaultdict(str)
      d["a"] = "b"
      d["b"] = "c"
      d["c"] = "d"
      d["d"] = "e"
      d["e"] = "f"
      d["f"] = "g"
      d["g"] = "h"
      d["h"] = "i"
      d["i"] = "j"
      d["j"] = "k"
      d["k"] = "l"
      d["l"] = "m"
      d["m"] = "n"
      d["n"] = "o"
      d["o"] = "p"
      d["p"] = "q"
      d["q"] = "r"
      d["r"] = "s"
      d["s"] = "t"
      d["t"] = "u"
      d["u"] = "v"
      d["v"] = "w"
      d["w"] = "x"
      d["x"] = "y"
      d["y"] = "z"
      return d[N]
  
problem_description: Statement
  
  Given is a lowercase English letter C that is not `z`. Print the letter that
  follows C in alphabetical order.
samples: [{"input": "a", "output": "b\n    \n\n`a` is followed by `b`.\n\n* * *"}, {"input": "y", "output": "z\n    \n\n`y` is followed by `z`."}]