output_description: If TopCoDeer is honest, print `H`. If he is dishonest, print `D`.
  
  * * *
input_description: The input is given from Standard Input in the following format:
  
      
      
      a b
attempt: a,b = map(str,input().split())
  num = 0
  if a == "D"
    num = num + 1
  if b == "D"
    num = num + 1
  if num%2 == 0:
    print("H")
  else:
    print("D")
problem_description: Statement
  
  Two deer, AtCoDeer and TopCoDeer, are playing a game called _Honest or
  Dishonest_. In this game, an honest player always tells the truth, and an
  dishonest player always tell lies. You are given two characters a and b as the
  input. Each of them is either `H` or `D`, and carries the following
  information:
  
  If a=`H`, AtCoDeer is honest; if a=`D`, AtCoDeer is dishonest. If b=`H`,
  AtCoDeer is saying that TopCoDeer is honest; if b=`D`, AtCoDeer is saying that
  TopCoDeer is dishonest.
  
  Given this information, determine whether TopCoDeer is honest.
samples: [{"input": "H H", "output": "H\n    \n\nIn this input, AtCoDeer is honest. Hence, as he says, TopCoDeer is honest.\n\n* * *"}, {"input": "D H", "output": "D\n    \n\nIn this input, AtCoDeer is dishonest. Hence, contrary to what he says,\nTopCoDeer is dishonest.\n\n* * *"}, {"input": "D D", "output": "H"}]