Score : 100 points
You are given three strings A, B and C. Check whether they form a word chain.
More formally, determine whether both of the following are true:
If both are true, print YES
. Otherwise, print NO
.
a
- z
).Input is given from Standard Input in the following format:
A B C
Print YES
or NO
.
rng gorilla apple
YES
They form a word chain.
yakiniku unagi sushi
NO
A and B form a word chain, but B and C do not.
a a a
YES
aaaaaaaaab aaaaaaaaaa aaaaaaaaab
NO