Problem Statement

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

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.

Constraints

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

Sample Input 1

chokudai
chokudaiz

Sample Output 1

Yes

chokudaiz can be obtained by appending z at the end of chokudai.

Sample Input 2

snuke
snekee

Sample Output 2

No

snekee cannot be obtained by appending one character at the end of snuke.

Sample Input 3

a
aa

Sample Output 3

Yes

见题面 Input 部分

见题面 Output 部分