Score : $100$ points
Takahashi wants to be a member of some web service.
He tried to register himself with the ID $S$, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of $S$ as his ID.
He is now trying to register with the ID $T$. Determine whether this string satisfies the property above.
Input is given from Standard Input in the following format:
If $T$ satisfies the property in Problem Statement, print
Yes; otherwise, print
chokudaiz can be obtained by appending
z at the end of
snekee cannot be obtained by appending one character at the end of