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CF2048C.Kevin and Binary Strings
Kevin and Binary Strings
Kevin discovered a binary string that starts with 1 in the river at Moonlit River Park and handed it over to you. Your task is to select two non-empty substrings of (which can be overlapped) to maximize the XOR value of these two substrings.
The XOR of two binary strings and is defined as the result of the operation applied to the two numbers obtained by interpreting and as binary numbers, with the leftmost bit representing the highest value. Here, denotes the bitwise XOR operation.
The strings you choose may have leading zeros.
A string is a substring of a string if can be obtained from by the deletion of several (possibly, zero or all) characters from the beginning and several (possibly, zero or all) characters from the end.
Input
Each test contains multiple test cases. The first line contains the number of test cases ().
The only line of each test case contains a binary string that starts with 1 ().
It is guaranteed that the sum of over all test cases doesn't exceed .
Output
For each test case, output four integers (, ) — in the case the two substrings you selected are and .
If there are multiple solutions, print any of them.
Note
In the first test case, we can choose and , and 1}\oplus\texttt{111}=\texttt{110. It can be proven that it is impossible to obtain a larger result. Additionally, , , , is also a valid solution.
In the second test case, , , the result is 100}\oplus\texttt{1000}=\texttt{1100, which is the maximum.
Samples
5
111
1000
10111
11101
1100010001101
2 2 1 3
1 3 1 4
1 5 1 4
3 4 1 5
1 13 1 11
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