题目描述
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.
-----Constraints-----
- a=H or a=D.
- b=H or b=D.
-----Input-----
The input is given from Standard Input in the following format:
a b
-----Output-----
If TopCoDeer is honest, print H. If he is dishonest, print D.
-----Sample Input-----
H H
-----Sample Output-----
H
In this input, AtCoDeer is honest. Hence, as he says, TopCoDeer is honest.
输入格式
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输出格式
见题面