Solved! Difficulty: D2E 思考题 for everyone Man on Graph You are given M chains each of N+1 nodes. We call the i-th node on the j-th chain (j,i-1). We define a bridge edge connecting (a,b) and (c,d) as follows: - a≠c - b=d - b and d don't equ……

Solved! Difficulty: Div2E 思考题for everyone Dynamic DP You are given: integer arrays A and dp of length N. integer arrays l and r of length N. For each 2\leq i\leq N,1\leq l_i\leq r_i\leq i-1 Known: dp_1=A_1 dp_i=min(dp[l_i,r_i])+A_i for 2\l……

Member: Chairman Jing, XGN, ZJS, XZM, ZHD Also In: Dummy Rong,HTC Problem Solver FST A All ZHD(hacked) B All None C All ZHD(unfinished) D Chairman Jing ZHD(unfinished) E Unsolved F Unsolved

还是中文好…… 我顺便看一下你昨天的游记ZKY Problem A 蜜汁匹配…… 写6维DP写了40？？YCS神犇好像写了50？ 神犇和我期望分数XGN40SYR20ZKY50Charlie Yan50 Problem B 流浪地球的梗？？一道树上问题 写了next_permutation连20分都跑不到，人家搜索搜的……

Member: Chairman Jing and XGN Also: Dummy Rong 19:35 2019/4/6 Pretest Passed: A,B,C,D,E ProblemSolverFSTABothNOBBothNOCCM.J.NODCM.J.NOEXGNNO A good competition 🙂

应XZM要求，这次改用中文 I told you there was nothing wrong with %I64d and %lld!XGN 预言：6题省选题中至少有3题和数据结构有关 Problem A 给出长度为N的整数数组A。求出A中区间异或值最大的K个的异或和。 好吧，其实60分很好拿（N小于等于1000）。但……

JSOI 2019 Diary Day 0 I came from the White House --ZKY Morning Get up at 7:40(can't sleep well) then watched Anime until 10am. Gonna take a Didi to South Station but waited for 20 minutes without seeing a car come. Then finally get a Didi Zhua……

Preparing - for - JSOI 2019

ICPC WORLD FINAL IS ON TODAY! Schedule here: https://icpc.baylor.edu/worldfinals/schedule