2020-2021:teams:farmer_john:bazoka13:2020_petrozavodsk_winter_camp_jagiellonian_u_contest
这是本文档旧的修订版!
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题意:给定一个有$n\quad n\leq 1e6$个数的序列,求二元组$i,j$的数量满足$C^{a_i}_{a_j}$为奇数。
题解:$C^m_n$为奇数应满足$n&m=m$,之后利用$SOS\quad DP$求解
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2020-2021/teams/farmer_john/bazoka13/2020_petrozavodsk_winter_camp_jagiellonian_u_contest.1590743503.txt.gz · 最后更改: 2020/05/29 17:11 由 bazoka13