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104531
gym104531 I Bracket
题意 题面 做法 结论:对于字符串\(s\),其为合法括号序列的充要条件为 (1)\(|s|\)为偶数, (2)构造序列\(a_i\),若\(s_i\)='(' or '?',则\(a_i=+1\);若\(s_i\)=')',则\(a_i=-1\),\({a_i}\)的前缀和均\(\ge 0\) ( ......
Bracket
104531
gym
更新时间 2023-09-15
题解 Gym 104531D【Coffee】
2022 SYSU School Contest 题目不想翻译了,自己看能看懂。 problam The girls of HTT like drinking tea. But one day, they wanted a change and decided to try coffee in th ......
题解
104531D
104531
Coffee
Gym
更新时间 2023-09-11
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