B. Ordering Pizza

It's another Start[c]up finals, and that means there is pizza to order for the onsite contestants. There are only 2 types of pizza (obviously not, but let's just pretend for the sake of the problem), and all pizzas contain exactly S slices.

It is known that the i-th contestant will eat si slices of pizza, and gain ai happiness for each slice of type 1 pizza they eat, and bi happiness for each slice of type 2 pizza they eat. We can order any number of type 1 and type 2 pizzas, but we want to buy the minimum possible number of pizzas for all of the contestants to be able to eat their required number of slices. Given that restriction, what is the maximum possible total happiness that can be achieved?

Input

The first line of input will contain integers N and S (1 ≤ N ≤ 105, 1 ≤ S ≤ 105), the number of contestants and the number of slices per pizza, respectively. N lines follow.

The i-th such line contains integers si, ai, and bi (1 ≤ si ≤ 105, 1 ≤ ai ≤ 105, 1 ≤ bi ≤ 105), the number of slices the i-th contestant will eat, the happiness they will gain from each type 1 slice they eat, and the happiness they will gain from each type 2 slice they eat, respectively.

Output

Print the maximum total happiness that can be achieved.

Examples
Input
3 12
3 5 7
4 6 7
5 9 5
Output
84
Input
6 10
7 4 7
5 8 8
12 5 8
6 11 6
3 3 7
5 9 6
Output
314
Note

In the first example, you only need to buy one pizza. If you buy a type 1 pizza, the total happiness will be 3·5 + 4·6 + 5·9 = 84, and if you buy a type 2 pizza, the total happiness will be 3·7 + 4·7 + 5·5 = 74.

在买的披萨数量最少的前提下幸福度最大。

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <vector>
#include <queue>
#include <stack>
#include <cstdlib>
#include <iomanip>
#include <cmath>
#include <cassert>
#include <ctime>
#include <cstdlib>
#include <windows.h>
#include <map>
#include <set>
using namespace std;
#pragma comment(linker, "/stck:1024000000,1024000000")
#define lowbit(x) (x&(-x))
#define max(x,y) (x>=y?x:y)
#define min(x,y) (x<=y?x:y)
#define MAX 100000000000000000
#define MOD 1000000007
#define pi acos(-1.0)
#define ei exp(1)
#define PI 3.1415926535897932384626433832
#define ios() ios::sync_with_stdio(true)
#define INF 1044266558
#define mem(a) (memset(a,0,sizeof(a)))
typedef long long ll;
ll n,s,m,a,b,cnta=,cntb=;
ll ans=,pos=,inf=;
vector<pair<ll,ll> >v[];
int main()
{
scanf("%lld%lld",&n,&s);
for(int i=;i<n;i++)
{
scanf("%lld%lld%lld",&m,&a,&b);
if(a>=b) ans+=m*a,cnta=(cnta+m)%s,v[].push_back(make_pair(a-b,m));
else ans+=m*b,cntb=(cntb+m)%s,v[].push_back(make_pair(b-a,m));
}
sort(v[].begin(),v[].end());
sort(v[].begin(),v[].end());
if(cnta+cntb>s) return *printf("%lld\n",ans);
for(int i=;i<v[].size();i++)
{
pos+=min(v[][i].second,cnta)*v[][i].first;
cnta-=min(cnta,v[][i].second);
}
for(int i=;i<v[].size();i++)
{
inf+=min(v[][i].second,cntb)*v[][i].first;
cntb-=min(cntb,v[][i].second);
}
printf("%lld\n",ans-min(inf,pos));
return ;
}

cf 865 B. Ordering Pizza的更多相关文章

  1. Codeforce 867 C. Ordering Pizza (思维题)

    C. Ordering Pizza It's another Start[c]up finals, and that means there is pizza to order for the ons ...

  2. C - Ordering Pizza CodeForces - 867C 贪心 经典

    C - Ordering Pizza CodeForces - 867C C - Ordering Pizza 这个是最难的,一个贪心,很经典,但是我不会,早训结束看了题解才知道怎么贪心的. 这个是先 ...

  3. Codeforces Round #437 C. Ordering Pizza

    题意: n个人吃披萨,总共有两种披萨,每种披萨都是有S块,给出每个人要吃的块数,吃第一种披萨能获得的happy值,吃第二种披萨能获得的happy值,问你,在购买的披萨数最少的情况下能获得的最大的总的h ...

  4. 【Codeforces Round #437 (Div. 2) C】 Ordering Pizza

    [链接]h在这里写链接 [题意]     给你参赛者的数量以及一个整数S表示每块披萨的片数.     每个参数者有3个参数,si,ai,bi;     表示第i个参赛者它要吃的披萨的片数,以及吃一片第 ...

  5. Codeforces Round #437 (Div. 2)[A、B、C、E]

    Codeforces Round #437 (Div. 2) codeforces 867 A. Between the Offices(水) 题意:已知白天所在地(晚上可能坐飞机飞往异地),问是否从 ...

  6. CF泛做

    CF Rd478 Div2 A Aramic script 题意:给定几个字符串,去重后,求种类 思路:直接map乱搞 #include<bits/stdc++.h> using name ...

  7. Codeforces Round #437 (Div. 2, based on MemSQL Start[c]UP 3.0 - Round 2)

    Problem A Between the Offices 水题,水一水. #include<bits/stdc++.h> using namespace std; int n; ]; i ...

  8. Write-up-Bob_v1.0.1

    关于 下载地址:点我 哔哩哔哩视频:哔哩哔哩 信息收集 网卡:vmnet8:IP在192.168.131.1/24 ➜ ~ ip a show dev vmnet8 5: vmnet8: <BR ...

  9. UVA 565 565 Pizza Anyone? (深搜 +位运算)

      Pizza Anyone?  You are responsible for ordering a large pizza for you and your friends. Each of th ...

随机推荐

  1. 解决jquery动态增加元素后children值没有变的问题

    html代码如下: <ul id="attr_input_panel"> <li> <div class="attr_input_item& ...

  2. CentOS6.5安装redis(3.0.3)

      如果没有安装gcc需要安装gcc 才能编译成功 yum install gcc 离线安装gcc的方法 # rpm -ivh mpfr-2.4.1-6.el6.x86_64.rpm # rpm -i ...

  3. HDU 5297 Y sequence Y数列

    题意:给定正整数n和r.定义Y数列为从正整数序列中删除全部能表示成a^b(2 ≤ b ≤ r)的数后的数列,求Y数列的第n个数是多少. 比如n = 10. r = 3,则Y数列为2 3 5 6 7 1 ...

  4. python Flask 学前班

    0.Flask简单介绍     Flask是一个用Python编写的轻量级的Web应用框架.本文第一部分将简单解说Flask的安装,接着展示一个Flask的样例,第一个样例非常easy但也存在缺陷-- ...

  5. 【LeetCode-面试算法经典-Java实现】【064-Minimum Path Sum(最小路径和)】

    [064-Minimum Path Sum(最小路径和)] [LeetCode-面试算法经典-Java实现][全部题目文件夹索引] 原题 Given a m x n grid filled with ...

  6. USACO Section 1.3 : Calf Flac (calfflac)

    题意:据说假设你给无限仅仅母牛和无限台巨型便携式电脑(有很大的键盘),那么母牛们会制造出世上最优秀的回文. 你的工作就是去寻找这些牛制造的奇观(最优秀的回文). 在寻找回文时不用理睬那些标点符号.空格 ...

  7. WLAN HAL

      WLAN HAL WLAN 框架具有三个 WLAN HAL 表面,分别由三个不同的 HIDL 软件包表示: 供应商 HAL:Android 专用命令的 HAL 表面.HIDL 文件位于 hardw ...

  8. NodeJS学习笔记 进阶 (3)Nodejs 进阶:Express 常用中间件 body-parser 实现解析(ok)

    个人总结:Node.js处理post表单需要body-parser,这篇文章进行了详细的讲解. 摘选自网络 写在前面 body-parser是非常常用的一个express中间件,作用是对http请求体 ...

  9. [洛谷P3932]浮游大陆的68号岛

    题目大意:有一行物品,每两个物品之间有一个距离.每个物品有一个价值.现在问你若干问题,每个问题问你把l~r所有物品全部搬到物品x处需要多少价值. 把物品a搬到物品b处的价值为物品a的价值乘a到b的距离 ...

  10. opencv3.4.1和vs2017配置

    官网下载opencv,双击之后会将文件提取出来,提取出来的文件放在一个合适的位置(选个好地方,不要乱改,环境的配置依赖于这个目录),我放在了D:\program下 配置环境变量: 右键此电脑--> ...