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.
s = list(input())
if s.count('H') == s.count('Q'):
    print('Yes')
else:
    if s.count('H') == len(s) or s.count('Q') == len(s):
        print('Yes')
    else:
        print('No')
