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特殊情况下的状压dp 阅读全文
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#Marvolo Gaunt's Ring Professor Dumbledore is helping Harry destroy the Horcruxes. He went to Gaunt Shack as he suspected a Horcrux to be present ther 阅读全文
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#Cut Ribbon time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Polycarpus has a ribbon, its leng 阅读全文
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#Multiplicity You are given an integer array a1,a2,…,an. The array b is called to be a subsequence of a if it is possible to remove some elements from 阅读全文