题目链接:http://codeforces.com/contest/799/problem/C 题目: 题意: 给你n种喷泉的价格和漂亮值,这n种喷泉题目指定用钻石或现金支付(分别用D和C表示),C和D之间不能相互转换.你现在需要修建两个喷泉,给你硬币数和现金数,问你怎样才能使修建的两个喷泉的总漂亮值最大. 思路: 易知,要修建的两个喷泉如果一个是用钻石支付,另一个用现金支付,那么只需找到小于给的钻石和现金的上限的漂亮值最大的两个温泉相加,此处遍历一边即可.对于这两个温泉都用同一种支付方式的情…

C. Fountains time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Arkady plays Gardenscapes a lot. Arkady wants to build two new fountains. There are n available fountains, for each fountain it…

题目传送门:http://codeforces.com/contest/799/problem/C C. Fountains time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output   Arkady plays Gardenscapes a lot. Arkady wants to build two new fountains. T…

分几种情况讨论: (1)仅用C或D买两个 ①买两个代价相同的(实际不同)(排个序) ②买两个代价不同的(因为买两个代价相同的情况已经考虑过了,所以此时对于同一个代价,只需要保存美丽度最高的喷泉即可)(预处理b[i],表示代价小于等于i的物品中,美丽度最大的是多少.为了防止重复购买,枚举其中一个,然后另一个只买代价小于其代价的物品.) (2)用C和D各买一个 按这几种情况分类,可以比较好地避免买到同一个喷泉的情况. #include<cstdio> #include<algorithm&g…

A. Carrot Cakes time limit per test:1 second memory limit per test:256 megabytes input:standard input output:standard output In some game by Playrix it takes t minutes for an oven to bake k carrot cakes, all cakes are ready at the same moment t minut…

我从来没想过自己可以被支配的这么惨,大神讲这个场不容易掉分的啊 A. Carrot Cakes time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output In some game by Playrix it takes t minutes for an oven to bake k carrot cakes, all cakes are…

E - Aquarium decoration 枚举两个人都喜欢的个数,就能得到单个喜欢的个数,然后用平衡树维护前k大的和. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define PII pair<int, int> #define PLI pair<LL, int> #define ull unsigned…

显然将扩张按从大到小排序之后,只有不超过前34个有效. d[i][j]表示使用前i个扩张,当length为j时,所能得到的最大的width是多少. 然后用二重循环更新即可, d[i][j*A[i]]=max(d[i][j*A[i]],d[i-1][j]); d[i][j]=max(d[i][j],d[i-1][j]*A[i]); 当某次更新时,检验其符合了答案的条件,就输出. 显然可以用滚动数组优化到空间为线性. 注意爆int的问题. 此外,瞎几把搜+花式剪枝也能过. #include<cstd…

D. Field expansion time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output In one of the games Arkady is fond of the game process happens on a rectangular field. In the game process Arkady can buy…

题目链接:http://codeforces.com/contest/620/problem/E E. New Year Tree time limit per test 3 seconds memory limit per test 256 megabytes input standard input output standard output The New Year holidays are over, but Resha doesn't want to throw away the N…