G:Prefixes and Suffixes(2016华工安信证券杯校赛)(还没搞懂!!)
Codeforces Round #246 (Div. 2)D
D. Prefixes and Suffixestime limit per test:1 secondYou have a string s = s1s2…s|s|, where |s| is the length of string s, and si its i-th character.
Let’s introduce se
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2016-05-07 00:17:36 ·
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