Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2)
B
Reverse String
Codeforces
1300
原题
← AC →
翻译中…

You have a string $s$ and a chip, which you can place onto any character of this string.

翻译中…

After placing the chip, you move it to the right several (maybe zero) times, i. e. you perform the following operation several times: if the current position of the chip is $i$, you move it to the position $i + 1$. Of course, moving the chip to the right is impossible if it is already in the last position.

翻译中…

After moving the chip to the right, you move it to the left several (maybe zero) times, i. e. you perform the following operation several times: if the current position of the chip is $i$, you move it to the position $i - 1$. Of course, moving the chip to the left is impossible if it is already in the first position.

翻译中…

When you place a chip or move it, you write down the character where the chip ends up after your action. For example, if $s$ is abcdef, you place the chip onto the $3$-rd character, move it to the right $2$ times and then move it to the left $3$ times, you write down the string cdedcb.

翻译中…

You are given two strings $s$ and $t$. Your task is to determine whether it's possible to perform the described operations with $s$ so that you write down the string $t$ as a result.

翻译中…

Input

翻译中…

The first line contains one integer $q$ ($1 \le q \le 500$) — the number of test cases.

翻译中…

Each test case consists of two lines. The first line contains the string $s$ ($1 \le |s| \le 500$), the second line contains the string $t$ ($1 \le |t| \le 2 \cdot |s| - 1$). Both strings consist of lowercase English characters.

翻译中…

It is guaranteed that the sum of $|s|$ over all test cases does not exceed $500$.

翻译中…

Output

翻译中…

For each test case, print "YES" if you can obtain the string $t$ by performing the process mentioned in the statement with the string $s$, or "NO" if you cannot.

翻译中…

You may print each letter in any case (YES, yes, Yes will all be recognized as positive answer, NO, no and nO will all be recognized as negative answer).

翻译中…

Note

翻译中…

Consider the examples.

翻译中…

The first test case is described in the statement.

翻译中…

In the second test case, you can place the chip on the $1$-st position, move it twice to the right, and then move it twice to the left.

翻译中…

In the fourth test case, you can place the chip on the $2$-nd position, and then don't move it at all.

翻译中…

In the fifth test case, you can place the chip on the $1$-st position, move it $5$ times to the right, and then finish the process.

翻译中…

样例

Input #1
6
abcdef
cdedcb
aaa
aaaaa
aab
baaa
ab
b
abcdef
abcdef
ba
baa
Output #1
YES
YES
NO
YES
YES
NO
InputCopy OutputCopy
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题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。