这道题算是一道很经典的题,很好的诠释了贪心和动态规划的不同功能.求最少钱的数量用贪心就够了,但是求最多钱的数量要用到动态规划的思想,每步都尽量保留最大 数量.具体看程序注解: #include"iostream" #include"stdio.h" #include"algorithm" #include"string.h" #include"cmath" using namespace std; int…

HDOJ(HDU).2844 Coins (DP 多重背包+二进制优化) 题意分析 先把每种硬币按照二进制拆分好,然后做01背包即可.需要注意的是本题只需要求解可以凑出几种金钱的价格,而不需要输出种数.因此用0表示不可以,1表示可以.最后对dp数组扫描一遍即可. 代码总览 #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #define nmax 100…

作为一个oier,以及大学acm党背包是必不可少的一部分.好久没做背包类动规了.久违地练习下-.- dd__engi的背包九讲:http://love-oriented.com/pack/ 鸣谢http://blog.csdn.net/eagle_or_snail/article/details/50987044,这里有大部分比较有趣的dp练手题. hud 2602 01背包板子题 #include<cstdio> #include<iostream> #include<cs…

Coins Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 8999    Accepted Submission(s): 3623 Problem Description Whuacmers use coins.They have coins of value A1,A2,A3...An Silverland dollar. One…

Coins Time Limit: / MS (Java/Others) Memory Limit: / K (Java/Others) Total Submission(s): Accepted Submission(s): Problem Description Whuacmers use coins.They have coins of value A1,A2,A3...An Silverland dollar. One day Hibix opened purse and found t…

题意是给你几个数,再给你这几个数的可以用的个数,然后随机找几个数来累加, 让我算可以累加得到的数的种数! 解题思路:先将背包初始化为-1,再用多重背包计算,最后检索,若bb[i]==i,则说明i这个数是可以得到的!一个循环计算可以达到的数的个数,最后输出就好了! #include<stdio.h> #define max(a,b) a>b?a:b int bb[500000]; int vv; void shun(int cost,int weight) { int i; for(i=c…

题目链接:http://poj.org/problem?id=1742 http://acm.hdu.edu.cn/showproblem.php?pid=2844 题目分类:动态规划 代码: #include<stdio.h> #include<string.h> #include<math.h> #include<algorithm> using namespace std; int n,m; ]; struct P { int a,b; }point[…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=2844 思路:多重背包 , dp[i] ,容量为i的背包最多能凑到多少容量,如果dp[i] = i,那么代表这个数能凑出来,ans+1: 实现代码: #include<bits/stdc++.h> using namespace std; ; int lis[M],dp[M],a[M],c[M]; int main() { int n,m,idx; while(cin>>n>>m…

Problem Description Whuacmers use coins.They have coins of value A1,A2,A3...An Silverland dollar. One day Hibix opened purse and found there were some coins. He decided to buy a very nice watch in a nearby shop. He wanted to pay the exact price(witho…

Coins                                                                             Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description Whuacmers use coins.They have coins of value A1,A2,A3...An Silve…