第一场： A. Maximum MultipleB. Balanced SequenceC. Triangle
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[ Codeforces Round #518 ] [ CF 1067D ] Computer Game
题目大意：有\(n\)个副本，副本可以升级，每个副本有三个值\( a_i , b_i , p_i \)，其中\
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[ North American Invitational Programming Contest 2018 ] Missing Gnomes
[ North American Invitational Programming Contest 2018 ] Zoning Houses
[ North American Invitational Programming Contest 2018 ] Flashing Fluorescents
题目大意：有n盏灯\( ( 1 \leq n \leq 16 ) \)，编号为1到n，每一秒可以按下某一盏灯的
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North American Invitational Programming Contest 2018
A. Cut It Out!B. Double CliqueC. Flashing Fluorescentsv
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[ HDU6319 ] Ascending Rating
题意有点麻烦就懒得说了……简单来说，用单调队列维护出数字被删去的顺序就好了。
[ HDU6318 ] Swaps and Inversions
[ HDU6312 ] Game
[ HDU6309 ] Absolute
题目大意：给定n个区间\([l_i , r_i]\)，\(-10^6 \leq l_i \leq r_i \l
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[ SPOJ ] RNG – Random Number Generator
题意：有n个正整数\(1 \leq x_1…x_n \leq 10\)，\(a_i\)为\([-x
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