5666脑筋急转弯中等数值题medium
Balanced Parenthesis Count
题目
How many ways can you arrange 5 left and 5 right parentheses in a row so that every prefix has at least as many left as right parentheses (i.e. the sequence is balanced)?
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
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