The famous joke programming language HQ9+ has only 4 commands. In this problem we will explore its subset — a language called HQ...
The only line of the input is a string between 1 and 10<sup class="upper-index">6</sup> characters long.
text = input()
remainder = [x for x in text if x != "H" and x != "Q"]
if len(remainder) != 0: print("NO")
else:
    if len(text) %2 == 0: print("YES")
    else: print("NO")