#BZOJ2532. Costing Spells
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ID: 987
Type: RemoteJudge
1000ms
256MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
root
Costing Spells
题目描述
对于字符串 W ，定义WR为W反序后的字符串。先给定字符串S，求S的最大子串能表示成WWRWWR的形式。
S长度小于等于300000
2
abrahellehhelleh
rachelhellabracadabra
12
0