CF1837C.Best Binary String

传统题 时间 2000 ms 内存 256 MiB 5 尝试 1 已通过 1 标签

Best Binary String

You are given a string ss consisting of the characters 0, 1 and/or ?. Let's call it a pattern.

Let's say that the binary string (a string where each character is either 0 or 1) matches the pattern if you can replace each character ? with 0 or 1 (for each character, the choice is independent) so that the strings become equal. For example, 0010 matches ?01?, but 010 doesn't match 1??, ??, or ????.

Let's define the cost of the binary string as the minimum number of operations of the form "reverse an arbitrary contiguous substring of the string" required to sort the string in non-descending order.

You have to find a binary string with the minimum possible cost among those that match the given pattern. If there are multiple answers, print any of them.

Input

The first line contains a single integer tt (1t31041 \le t \le 3 \cdot 10^4) — the number of test cases.

The first and only line of each test case contains the string ss (1s31051 \le |s| \le 3 \cdot 10^5) consisting of characters 0, 1, and/or ?.

The sum of the string lengths over all test cases does not exceed 31053 \cdot 10^5.

Output

For each test case, print a binary string with the minimum possible cost among those that match the given pattern. If there are multiple answers, print any of them.

Note

In the first test case of the example, the cost of the resulting string is 00.

In the second test case, the cost of the resulting string is 22: we can reverse the substring from the 11-st character to the 55-th character, and we obtain the string 00101. Then we reverse the substring from the 33-rd to the 44-th character, and we obtain the string 00011, which is sorted in non-descending order.

Samples

4
??01?
10100
1??10?
0?1?10?10
00011
10100
111101
011110010

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