Problem Statement

You are given two strings S and T consisting of lowercase English letters.
Determine if S is a prefix of T.
What is a prefix?
A prefix of $a string T_1T_2\ldots T_N$ of length N is a string expressed as the first i characters of $T, T_1T_2\ldots T_i$, where i is an integer such that $0 \leq i \leq N$. For example, when T = abc, there are four prefixes of T: an empty string, a, ab, and abc.

Input

Input is given from Standard Input in the following format:
S
T

Output

Print Yes if S is a prefix of T; print No otherwise.
Note that the judge is case-sensitive.

Constraints

• S and T are strings of lengths between 1 and 100 (inclusive) consisting of lowercase English letters.

Sample Input 1

atco
atcoder

Sample Output 1

Yes

atco is a prefix of atcoder. Thus, Yes should be printed.

Sample Input 2

code
atcoder

Sample Output 2

No

code is not a prefix of atcoder. Thus, No should be printed.

Sample Input 3

abc
abc

Sample Output 3

Yes

Note that a string is also a prefix of itself.

Sample Input 4

aaaa
aa

Sample Output 4

No

见题面 Input 部分

见题面 Output 部分