题意: 给定身上的4种硬币,分别是1 ,5 ,10, 25面额各有多张,要求组成面额p的硬币尽可能多.输出组成p的4种硬币各自的数量. 思路: 多重背包,300+ms.用01背包+二进制的方法.记录下所有的硬币的个数以及4种硬币分别的个数,注意初始化dp数组的不同之处. #include <iostream> #include <cstdio> #include <cstring> #define LL long long using namespace std; ,…

题目链接: Lightoj  1231 - Coin Change (I) 题目描述: 就是有n种硬币,每种硬币有两个属性(价值,数目).问用给定的硬币组成K面值,有多少种方案? 解题思路: 赤果果的多重背包,简单搞一下就好了.席八!烦烦烦.今天绝对是出门刷提前没看黄历,刚开始套了一个多重背包板子,蓝而跑出来的答案并不对,改来改去就错在细节的地方. #include <cmath> #include <cstdio> #include <cstring> #includ…

思路:刚看这道题感觉什么都不清楚,人物之间的关系一点也看不出来,都不知道怎么写,连并查集都没看出来,但是你可以仔细分析一下,当输入字符串为“yes”的时候,我们设输入的值为x和y,当x为天使是则由题可知y也为天使:当x为魔鬼的时候,则y也为魔鬼,所以输入“yes”的时候就相当于说他们是同类. 当输入字符串为“no”的时候,如果x为天使,则y为魔鬼:x为魔鬼的时候,y就是天使,所以当输入字符串为“no”的时候他们为异类..这不就是种类并查集的 0 (同类) 1(异类)并查集嘛! 再接着想,通过并查…

题目:http://poj.org/problem?id=3046 思路: dp [i] [j] :=前i种 构成个数为j的方法数. #include <cstdio> #include <cstring> #include <iostream> int T,A,S,B; int hash[1010]; int dp[1010][10100]; const int MOD=1e6; using namespace std; int main(){ while(cin&g…

Q: 额外添加了最大高度限制, 需要根据 alt 对数据进行预处理么? A: 是的, 需要根据 alt 对数组排序 Description The cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They have K (1 <= K <= 400) different types of blocks with w…

Cash Machine Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 38986   Accepted: 14186 Description A Bank plans to install a machine for cash withdrawal. The machine is able to deliver appropriate @ bills for a requested cash amount. The m…

\(Coins\) \(solution:\) 这道题很短,开门见山,很明显的告诉了读者这是一道多重背包.但是这道题的数据范围很不友好,它不允许我们直接将这一题当做01背包去做.于是我们得想一想优化. $bitset $ 优化: 这个是我最先想到的,因为这道题只牵扯到了能不能买,也就是说这个背包并没有什么权值(只有"可以"和"不可以")然后就是单纯的状态转移.而这不是我们的二进制最擅长的东西吗?(我们利用某一个硬币的面额进行更新时,直接用二进制的左右移和或运算即可)…

Charlie's Change Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3792   Accepted: 1144 Description Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motore…

http://poj.org/problem?id=1787   描述 Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motorests. Charlie hates change. That is basically the setup of your next task. Yo…

题目链接:http://poj.org/problem?id=1787 题意:有4种货币分别是1元,5元,10元,20元.现在告诉你这四种货币分别有多少个,问你正好凑出P元钱最多可以用多少货币.每种货币要用多少钱. 据说此题有完全背包的写法.. 我是按照多重背包写的,速度也不是很慢. 然后记录了下前驱. 刚开始全都写挫了..虽然现在也很挫.. 凑合着看吧 -- #include <cstdio> #include <algorithm> #include <cstring&g…

Time limit 1000 ms Memory limit 30000 kB description Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motorests. Charlie hates change. That is basically the setup of y…

网上说是多重背包,因为要输出方案,还要记录下路径,百度一下题解就可以. 自己做的时候,还没了解过多重背包,该题直接往完全背包思考了.咖啡的钱看作总的背包容量,1.5.10.25分别代表四种物品的重量,可以取多次,但是有限制数量.设dp[j]为咖啡的价格为j时,所能花费的最多钱币数此外建立一个二维数组num[j][i],表示咖啡的价格为j时,花费的第i种货币的个数 状态转移方程:dp[j]=max(dp[j],dp[j-v[i]]+1)初始条件:dp[j]=-1,dp[0]=0; num[j][i…

// 题意 给定一个数p,要求用四种币值为1,5,10,25的硬币拼成p,并且硬币数要最多,如果无解输出"Charlie cannot buy coffee.",1<=p<=1万,1<=硬币数量<=1万// 多重背包 // 网上见有用完全背包 貌似那个也可以 而且要快些// 一下是完全背包大致写法 for (i = 1; i <= 4; ++i) {   memset(used,0,sizeof(used)); for (j = mon[i]; j <…

Charlie's Change Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3176   Accepted: 913 Description Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motores…

Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motorests. Charlie hates change. That is basically the setup of your next task. Your program will be given numbers and…

9)回馈倾向人们早就发现.和猿类,猴类,狗类等其它很多认知能力较为低下的物种同样,人类身上也有以德报德,以牙还牙的极端倾向:这样的倾向明显能够促进有利于成员利益的团体合作.这跟非常多社会性的动物的基因程序非常类似.回馈倾向是群体生活进行协作的基础. 以牙还牙非常正常,非常普遍.那以德报怨呢?A)大自然并没有普遍的法则使得动物内部以德报怨的行为能推动物种的繁荣:B)假设一个国家对外交往放弃以牙还牙的做法,这个国家是否有好的前景是不确定的:(说的是中国和日本?)C)假设国与国之间都觉得以德报怨是最好…

Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motorests. Charlie hates change. That is basically the setup of your next task. Your program will be given numbers and…

http://poj.org/problem?id=1787 这个题目我一看就觉得是一个多重背包,但是呢,我不知道怎么输出路径,所以无可奈何,我就只能看一下题解了. 看了题解发现居然是把多重背包转化成完全背包,昨天学习了多重背包转化成01背包求解,今天又学习了这个. 题目大意:就是给你一个数字n,和1分钱的数量,5分钱的数量,10分钱的数量,25分钱的数量, 让你求组成这个数字n需要1分钱5分钱10分钱25分钱的数量,输出. 思路: dp[i]定义为组成 i 的硬币数量最多为多少. 这个题目就是…

贪嗔痴 & 懒贪装 1)伤害 041.仇恨加重伤害,漠视消除伤害. 042.90%的伤害是自己造成的. 044.伤害你的敌人使你比他更低下;仇恨使你和他一样;宽恕才能让你超越他. 109.让仇恨放在慢速度. 242.伤害带来教训. 260.仁慈让我们放过伤害;法律让伤害放过我们. 301.宿敌的和解一定需要防备. 309.伤害写在风中,恩赐记在大理石上:牢记别人的好处,忘记自己所受的伤害. 506.与报复伤害相比,宽恕显出高贵,轻视显出气概. 2)愤怒 198.悔恨的轮子是愤怒加愚行. 224.…

Description Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motorests. Charlie hates change. That is basically the setup of your next task.  Your program will be give…

http://poj.org/problem?id=3260   Description Farmer John has gone to town to buy some farm supplies. Being a very efficient man, he always pays for his goods in such a way that the smallest number of coins changes hands, i.e., the number of coins he…

Charlie's Change Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 3720   Accepted: 1125 Description Charlie is a driver of Advanced Cargo Movement, Ltd. Charlie drives a lot and so he often buys coffee at coffee vending machines at motore…

Description People in Silverland use coins.They have coins of value A1,A2,A3...An Silverland dollar.One day Tony opened his money-box and found there were some coins.He decided to buy a very nice watch in a nearby shop. He wanted to pay the exact pri…

题目网址:http://poj.org/problem?id=1276 思路: 很明显是多重背包,把总金额看作是背包的容量. 刚开始是想把单个金额当做一个物品,用三层循环来 转换成01背包来做.T了…… 后面学习了 用二进制来处理数据. 简单地介绍一下二进制优化:✧(≖ ◡ ≖✿)  假设数量是8,则可以把它看成是1,2,4,1的组合,即这4个数的组合包括了1-8的所有取值情况.这是为什么呢?将它们转换成二进制再观察一下: 1:1 2:10 4:100 1:1 二进制都只有0,1.所以1,2,4…

题目代号:POJ 3260 题目链接:http://poj.org/problem?id=3260 The Fewest Coins Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 6715 Accepted: 2072 Description Farmer John has gone to town to buy some farm supplies. Being a very efficient man, he alway…

http://poj.org/problem?id=1742 n个硬币,面值分别是A1...An,对应的数量分别是C1....Cn.用这些硬币组合起来能得到多少种面值不超过m的方案. 多重背包,不过这题很容易超时,用背包九讲的代码有人说行,但是我提交还是超时,后来参考别人代码加了一些优化才能过,有时间要去搞清楚多重背包的单调队列优化. #include<cstdio> #include<cstring> #include<algorithm> using namespa…

Coins Time Limit: 3000MS Memory Limit: 30000K Total Submissions: 25827 Accepted: 8741 Description People in Silverland use coins.They have coins of value A1,A2,A3...An Silverland dollar.One day Tony opened his money-box and found there were some coin…

前端零基础 --css转换--skew斜切变形 transfor 3d==============重要不紧急! 重要紧急 重要不紧急 不重要紧急 不重要不紧急…

http://poj.org/problem?id=1014 题意:6个物品,每个物品都有其价值和数量,判断是否能价值平分. 思路: 多重背包.利用二进制来转化成0-1背包求解. #include<iostream> #include<string> #include<cstring> #include<cstdio> #include<algorithm> using namespace std; ; int sum; ]; int d[max…

Atitit.js javascript异常处理机制与java异常的转换 多重catc hDWR 环境 .js exception processVob7 1. 1. javascript异常处理机制throw自定义异常类对象...(推荐) 1 2. 2. Dwr Web前后台异常的统一处理 1 3. 自定义java异常check ex  为dwr 2 3.  java异常转换为js异常(js类库层) 2 4. Javascript的调用样品 3 5. Js的多级catch 3 6. -----…