括号匹配
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假设表达式中允许包含一种括号:圆括号,其嵌套的顺序随意,但需要成对出现。即()或 ()()等为正确的格式,)(为不正确的格式。 给定一串括号输入(换行作为结束符),检测格式是否正确,若正确输出YES;错误输出NO。 (括号数量≤100)
输入描述
无
输出描述
无
样例输入 1
()
样例输出 1
YES
2024022103
- Status
- Done
- Rule
- ACM/ICPC
- Problem
- 9
- Start at
- 2024-2-21 17:00
- End at
- 2024-2-21 18:30
- Duration
- 1.5 hour(s)
- Host
- Partic.
- 10