题目链接 这里只写个摘要,具体的可以看 神仙Itst的博客 大概是每相邻两个位置之间的线段要么被覆盖一次,要么被覆盖三次,然后DP,如下图: 代码: #include<bits/stdc++.h> using namespace std; #define N 70007 #define M 13 ; const int inf=0x3f3f3f3f; int f[N][M],g[N][M][M]; bool imp[N]; char s[N]; int a[N]; int read() { c…
我要举报本次校赛出题人的消极出题!!! 官方题解请戳:http://3.scnuacm2015.sinaapp.com/?p=89(其实就是一堆代码没有题解) A. 树链剖分数据结构板题 题目大意:我没看,看不懂. 基本思路:我不会. 参考代码:找Oyk老师和Czj老师去. B. The background of water problem 题目大意(大写加粗的水题):给定$N$个学生和他们$K$个科目的成绩$S_i$,再给出各科目$K_i$的权重顺序$Q_i$,求排名之后,拥有id为$X$的…
Problems # Name A Infinite Sequence standard input/output 1 s, 256 MB x3509 B Restoring Painting standard input/output 1 s, 256 MB x2519 C Money Transfers standard input/output 1 s, 256 MB x724 D Tree Construction standard input/outp…
A.Relic Discovery_hdu5982 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 57 Accepted Submission(s): 49 Problem Description Recently, paleoanthropologists have found historical remains on an…