Score : 200 points
Let w be a string consisting of lowercase letters. We will call w beautiful if the following condition is satisfied:
You are given the string w. Determine if w is beautiful.
a
-z
).The input is given from Standard Input in the following format:
w
Print Yes
if w is beautiful. Print No
otherwise.
abaccaba
Yes
a
occurs four times, b
occurs twice, c
occurs twice and the other letters occur zero times.
hthth
No