题目链接 网络赛的水实在太深,这场居然没出线zzz,差了一点点,看到这道题的的时候就剩半个小时了.上面是官方的题意题解,打完了才知道暴力就可以过,暴力我们当时是想出来了的,如果稍稍再优化一下估计就过了zzz.去年有一场现场赛也是n=1000,n^3过了,看来关键时刻实在做不出来就得大胆暴力啊. #include <bits/stdc++.h> using namespace std; typedef long long ll; ; int a[maxn],nex[maxn]; int main…
HDU 4046 Panda (ACM ICPC 2011北京赛区网络赛) Panda Time Limit: 10000/4000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1816 Accepted Submission(s): 632 Problem Description When I wrote down this letter, you may have…
Mart Master II Time Limit: 12000/6000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 675 Accepted Submission(s): 237 Problem Description Trader Dogy lives in city S, which consists of n districts. There are n - 1…
Clone Time Limit : 2000/1000ms (Java/Other) Memory Limit : 65536/65536K (Java/Other) Total Submission(s) : 8 Accepted Submission(s) : 5 Font: Times New Roman | Verdana | Georgia Font Size: ← → Problem Description After eating food from Chernobyl,…
2017 ACM-ICPC 亚洲区(南宁赛区)网络赛 M. Frequent Subsets Problem 题意:给定N和α还有M个U={1,2,3,...N}的子集,求子集X个数,X满足:X是U的子集且出现在M个子集中的次数>=α*M. 题解:因为N<=20,所以U的子集个数最大不过2^20.所以采用二进制把每个子集M映射压缩成一个数,比如: M={1,4,8,10}==>2^(1-0)+2^(4-1)+2^(8-1)+2^(10-1)=1+8+128+512=649(映射记为f,…
目录 A. Hard to prepare B.BE, GE or NE F.Features Track G.Trace H.Ryuji doesn't want to study I.Characters with Hash J. Maze Designer A. Hard to prepare After Incident, a feast is usually held in Hakurei Shrine. This time Reimu asked Kokoro to deliver…
D.Made In Heaven One day in the jail, F·F invites Jolyne Kujo (JOJO in brief) to play tennis with her. However, Pucci the father somehow knows it and wants to stop her. There are NN spots in the jail and MM roads connecting some of the spots. JOJO fi…