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Time Limit: 2 sec / Memory Limit: 1024 MB

Score :

200

points

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

\leq i \leq N

. For example, when

T =

abc, there are four prefixes of

T

: an empty string, a, ab, and abc.

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

Input is given from Standard Input in the following format:

 $S$  $T$

Print Yes if

S

is a prefix of

T

; print No otherwise. Note that the judge is case-sensitive.