p02681 AtCoder Beginner Contest 167 - Registration
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.

Constraints

* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1

Input

Input is given from Standard Input in the following format:


S
T


Output

If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.

Examples

Input

chokudai
chokudaiz


Output

Yes


Input

snuke
snekee


Output

No


Input

a
aa


Output

Yes
```python
s = input()
t = input()

print('Yes') if t[:-1] == s else print('No')
```