B - Prefix?
B - Prefix?
Score : $200$ points
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.Constraints
- $S$ and $T$ are strings of lengths between $1$ and $100$ (inclusive) consisting of lowercase English letters.
Input
Input is given from Standard Input in the following format:
Output
Print Yes if $S$ is a prefix of $T$; print No otherwise.
Note that the judge is case-sensitive.
atco
atcoder
Yes
atco is a prefix of atcoder. Thus, Yes should be printed.
code
atcoder
No
code is not a prefix of atcoder. Thus, No should be printed.
abc
abc
Yes
Note that a string is also a prefix of itself.
aaaa
aa
No
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