CF2169B.Drifting Away

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

Drifting Away

There's a river flowing in front of Monocarp's house, which can be represented as a strip of cells. In some cells, there is a strong current, while in others, there is no current. It can be represented as a string ss, consisting of the following characters:

  • the "less-than" sign ('<') — leftward current;
  • the "greater-than" sign ('>') — rightward current;
  • an asterisk ('\*') — no current.

At first, Monocarp chooses the cell to start his journey along the river at.

If there is a current in the cell, where Monocarp is at the moment, he is carried to the neighboring cell in the direction of the current. If there is no neighboring cell (i. e., a leftward current in cell 11 or a rightward current in cell nn), Monocarp ends up on the shore. Each move takes one minute.

If there is no current in the cell, where Monocarp is at the moment, he rows to the neighboring cell on the left or to the neighboring cell on the right. If there is no neighboring cell in the direction where Monocarp decides to row to, he ends up on the shore. Each move also takes one minute.

Monocarp wants to sail along the river for as long as possible. If Monocarp can sail infinitely, print 1-1. Otherwise, print the maximum time Monocarp can sail along the river before ending up on the shore.

Input

The first line contains a single integer tt (1t1041 \le t \le 10^4) — the number of test cases.

The only line of each test case contains a string ss (1s31051 \le |s| \le 3 \cdot 10^5), consisting only of characters '<' (leftward current), '>' (rightward current), '\*' (no current). The ASCII codes are 6060, 6262, and 4242, respectively.

An additional constraint on the input: the total length of strings ss over all test cases does not exceed 31053 \cdot 10^5.

Output

For each test case, output a single integer:

  • 1-1, if Monocarp can sail along the river infinitely;
  • the maximum time Monocarp can sail along the river before ending up on the shore, otherwise.

Samples

4
*****
<<<>
>*<
*
-1
3
-1
1

在线编程 IDE

建议全屏模式获得最佳体验