[Solution] Copy and Push Back CodeChef Solution

Anton loves creating strings!

Anton now wants to create a string S$S$ following some specific rules. They are as follows:

Initially, S$S$ is empty. Then, Anton can perform two types of operations on S$S$:

1. Choose a lowercase Latin character (an element of {a,b,c,…,z}$\{a,b,c,\dots ,z\}$) and append it to S$S$. For example, if currently S=clap$S=\mathtt{\text{clap}}$, Anton can turn it into one of {clapa,clapb,…,clapz}$\{\mathtt{\text{clapa}},\mathtt{\text{clapb}},\dots ,\mathtt{\text{clapz}}\}$.
2. Append a copy of S$S$ to itself. For example, if currently S=clap$S=\mathtt{\text{clap}}$, Anton can turn it into clapclap$\mathtt{\text{clapclap}}$.

However, Anton doesn't want to perform operation 1$1$ twice in a row.

Solution Click Below:-  👉CLICK HERE👈

👇👇👇👇👇

You are given a string A$A$ consisting of the lowercase Latin alphabet. Is it possible for Anton to create A$A$ using his operations any number of times?

Input Format

• The first line of input will contain a single integer T$T$, denoting the number of test cases.

Similar Heights Codechef Solution

Construct N CodeChef Solution

Chef On Date CodeChef Solution

Chess Time CodeChef Solution

Minimum Coins CodeChef Solution

End Sorted CodeChef Solution

Copy and Push Back CodeChef Solution

The XOR-OR Dilemma CodeChef Solution

• Each test case consists of two lines of input.
  • The first line of each test case contains a single integer N$N$, the length of the string A$A$.
  • The second line of each test case contains a string A$A$ of length N$N$.

Output Format

For each test case, output on a new line the answer — YES if Anton can create A$A$ using his operations, and NO otherwise.

Each character of the output may be printed in either uppercase or lowercase. For example, the strings YES, yes, and YeS will all be treated as identical.

Constraints

• 1≤T≤105$1\le T\le {10}^5$
• 1≤N≤106$1\le N\le {10}^6$
• A$A$ consists of only lowercase Latin characters
• The sum of N$N$ across all test cases won't exceed 106