Let the light guide us Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 62768/32768 K (Java/Others) Total Submission(s): 677 Accepted Submission(s): 226 Problem Description Plain of despair was once an ancient battlefield where those brave…
题目链接 and 题目大意 hdu3698 但是 hdu的数据比较弱,所以在这luogu提交吧UVA1490 Let the light guide us 有一个\(n*m\)的平原,要求每行选一个点,选\(n\)个点建造塔楼. 平原上每个点都有他自己的花费时间和魔法值. 为了正确控制塔楼,我们必须保证连续两排的每两座塔共用一个共同的魔法区域. 也就是要求每两行相邻的点都满足如下关系: 如果第\(i\)行选\(j\),第\(i+1\)行选\(k\),则需\(|j-k|≤f(i,j)+f(i+1,…
http://acm.hdu.edu.cn/showproblem.php?pid=3698 Let the light guide us Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 62768/32768 K (Java/Others) Total Submission(s): 759 Accepted Submission(s): 253 Problem Description Plain of despair was…
Description Plain of despair was once an ancient battlefield where those brave spirits had rested in peace for thousands of years. Actually no one dare step into this sacred land until the rumor that “there is a huge gold mine underneath the plain” s…
Let the light guide us Time Limit: 2000ms Memory Limit: 32768KB This problem will be judged on HDU. Original ID: 369864-bit integer IO format: %I64d Java class name: Main Plain of despair was once an ancient battlefield where those brave spiri…
我们预处理出来以i为结尾的最长回文后缀(回文自动机的构建过程中就可以求出)然后就是一个区间覆盖,因为我懒得写贪心,就写了线段树优化的DP. #include<iostream> #include<cstring> #include<cstdio> #include<cmath> #include<algorithm> using namespace std; const int N=101010; const int INF=1e9; int L…
http://acm.hdu.edu.cn/showproblem.php?pid=3698 Let the light guide us Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 62768/32768 K (Java/Others) Total Submission(s): 821 Accepted Submission(s): 285 Problem Description Plain of despair was…
Hdu6606 Distribution of books 题意 把一段连续的数字分成k段,不能有空段且段和段之间不能有间隔,但是可以舍去一部分后缀数字,求\(min(max((\sum ai ))\)其中\(\sum ai\)为一段的数字和 分析 最小化最大值问题通常我们要想到二分,所以答案的求法我们就解决了,但是二分我们怎么check呢?这个时候一点思路都没有,我们考虑暴力的算法,设dp[i]表示从1--i最多可以分成多少段,怎么转移,什么情况下可以转移呢? 显然\(dp[i]=max(dp…
