Big Event in HDU
Description
The splitting is absolutely a big event in HDU! At the same time, it is a trouble thing too. All facilities must go halves. First, all facilities are assessed, and two facilities are thought to be same if they have the same value. It is assumed that there is N (0<N<1000) kinds of facilities (different value, different kinds).
Input
A test case starting with a negative integer terminates input and this test case is not to be processed.
Output
Sample Input
2
10 1
20 1
3
10 1
20 2
30 1
-1
Sample Output
20 10
40 40 好久不刷题了,看到这个题一点思路也没有。后来想了一下,其实不难。把一组数,分解为和尽量相等的2组数。
看作01背包问题,背包容量为sum/2,求怎么组合可以最大可能的接近sum/2.
#include<iostream>
#include<stdio.h>
#include<math.h>
#include<string.h>
using namespace std;
int val[*+];
int dp[];
int max(int a,int b)
{
if(a>=b) return a;
else return b;
}
int main()
{ int n;
while(~scanf("%d",&n)&&n>)
{
memset(dp,,sizeof(dp));
int sum=;
int num=;
for(int i=;i<n;i++)
{
int tmp1,tmp2;
scanf("%d%d",&tmp1,&tmp2);
while(tmp2>)
{
val[num++]=tmp1;
sum+=tmp1;
tmp2--;
}
}
for(int i=;i<num;i++)
{
for(int j=sum/;j>=val[i];j--)
{
dp[j]=max(dp[j-val[i]]+val[i],dp[j]);
}
}
printf("%d %d\n",sum-dp[sum/],dp[sum/]);
}
return ;
}
Big Event in HDU的更多相关文章
- HDU-1171 Big Event in HDU
Big Event in HDU Problem Description Nowadays, we all know that Computer College is the biggest depa ...
- Big Event in HDU(HDU1171)可用背包和母函数求解
Big Event in HDU HDU1171 就是求一个简单的背包: 题意:就是给出一系列数,求把他们尽可能分成均匀的两堆 如:2 10 1 20 1 结果是:20 10.才最均匀! 三 ...
- 组合数学 - 母函数的变形 --- hdu 1171:Big Event in HDU
Big Event in HDU Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others ...
- HDU 1171 Big Event in HDU 多重背包二进制优化
题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=1171 Big Event in HDU Time Limit: 10000/5000 MS (Jav ...
- Big Event in HDU[HDU1171]
Big Event in HDU Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others ...
- HDU1171——Big Event in HDU(母函数)
Big Event in HDU DescriptionNowadays, we all know that Computer College is the biggest department in ...
- Big Event in HDU(HDU 1171 多重背包)
Big Event in HDU Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others ...
- hdu1171 Big Event in HDU 01-背包
转载请注明出处:http://blog.csdn.net/u012860063 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1171 Problem ...
- HDU1171-Big Event in HDU
描述: Nowadays, we all know that Computer College is the biggest department in HDU. But, maybe you don ...
随机推荐
- MySQL主从复制数据不一致问题【自增主键】
前言: 今天遇到主从表不一致的情况,很奇怪为什么会出现不一致的情况,因为复制状态一直都是正常的.最后检查出现不一致的数据都是主键,原来是当时初始化数据的时候导致的.现在分析记录下这个问题,避免以后再遇 ...
- 3.saltstack的grains和pillar学习笔记
作者:刘耀 QQ:22102107 SaltStack_Grains Grains grains是minion第一次启动的时候采集的静态数据,可以用在salt的模块和其他组件中.其实grains在每次 ...
- BestCoder21 1002.Formula 解题报告
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5139 题目意思:给出一个数 n,求出 f(n). 可以发现有以下规律: f(1) = 1! f(2) ...
- SQL键值约束、索引使用
添加約束的方式: [exec sp_helpconstraint 表名]->可用于查找到表创建的约束 CREATE TABLE stuInfo ( stuName ) NOT NULL,非空約束 ...
- window.location.href url含中文服务器收到乱码问题解决
中文乱码问题 window.location.href url含中文服务器收到乱码问题解决 (1).页面中先对中文进行编码. 如:window.location.href = url+"&a ...
- 如何:使用PicturBox实现类似淘宝网站图片的局部放大功能
转载至http://xuzhihong1987.blog.163.com/blog/static/267315872011822113131823/ 概要: 本文将讲述如何使用PictureBox控件 ...
- 编写一个程序,求s=1+(1+2)+(1+2+3)+…+(1+2+3+…+n)的值
编写一个程序,求s=1+(1+2)+(1+2+3)+…+(1+2+3+…+n)的值 1 #import <Foundation/Foundation.h> 2 3 int main( ...
- Jmeter 提取http请求返回值里json数据参数化方法
第三方插件下载地址:http://jmeter-plugins.org/downloads/all/ 插件下载后解压:找到JMeterPlugins-Extras.jar,把JMeterPlugins ...
- 重温WCF之数单向通讯、双向通讯、回调操作(五)
一.单向通讯单向操作不等同于异步操作,单向操作只是在发出调用的瞬间阻塞客户端,但如果发出多个单向调用,WCF会将请求调用放入到服务器端的队列中,并在某个时间进行执行.队列的存储个数有限,一旦发出的调用 ...
- 【JAVA与XML、dtd约束、Schema约束】
一.XML. (1)XML:Extensible Markup Language (2)XML是一种标记语言. (3)XML的设计宗旨是传输数据,而不是显示数据. (4)XML标签没有被预定义,即使用 ...