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

inputFormat

Input

Input is given from Standard Input in the following format:

S T

outputFormat

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

样例

snuke
snekee

No