题意:多重背包的w=v特殊情况 分析:此题如果用单调队列O(nv)会被无耻卡常数…… 然后鉴于此题W=V,所以只存在背包恰好为i的是否存在,即bool型的f[i]是否为1 即往背包染色上面考虑 如果是完全背包,那么有f[j]=f[j]|f[j-v[i]] 那么此题是不是不可以做呢?并不是,我们可以记录下每个状态所用的物品的个数,限制一下即可,不影响结果(因为这实际上不能算是dp,因为没有最优的抉择的选举,只是刷一遍) 教主果然吊……Orz StQ…

意甲冠军:你有N种硬币,每个价格值A[i],每个号码C[i],要求. 在不超过M如果是,我们用这些硬币,有多少种付款的情况下,.那是,:1,2,3,4,5,....,M这么多的情况下,,你可以用你的硬币不找零,种情况. 比如: 你有一种硬币,价值2.个数2,那么 你是不能付款 3元的..你仅仅能付款2,或者4元.. OK,题意差点儿相同就是这样啦. 那么这里有两种方式! 分析: 那么这里我们能够用多重背包来解决,我们把价值和重量看成一样的w[i] = A[i]:用M作为背包. 那么dp 过后.我…

题目传送门 Coins Time Limit: 3000MS   Memory Limit: 30000K Total Submissions: 41707   Accepted: 14125 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 wer…

You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you need to make up that amount. If that amount of money cannot be made up by any combination of the coins,…

题目描述 Farmer John's cows like to play coin games so FJ has invented with a new two-player coin game called Xoinc for them. Initially a stack of N (5 <= N <= 2,000) coins sits on the ground; coin i from the top has integer value C_i (1 <= C_i <=…

题目描述 Farmer John's cows like to play coin games so FJ has invented with a new two-player coin game called Xoinc for them. Initially a stack of N (5 <= N <= 2,000) coins sits on the ground; coin i from the top has integer value C_i (1 <= C_i <=…

http://poj.org/problem?id=1742 (题目链接) 题意 给出n钟纸币,每种纸币面值为a[i],数量为c[i],问能够成多少数值小于等于m的数. Solution 先想到了容斥,然并卵.又想到了多重背包,这不是经典模型吗..毫不犹豫二进制分组,结果就TLE了..于是写了发nm的.. 细节 多组数据清空数组. 代码 // poj1742 #include<algorithm> #include<iostream> #include<cstdlib>…

原题链接在这里:https://leetcode.com/problems/coin-change/ 题目: You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you need to make up that amount. If that amount of m…

Coin Test 时间限制:3000 ms  |  内存限制:65535 KB 难度:1   描述 As is known to all,if you throw a coin up and let it droped on the desk there are usually three results. Yes,just believe what I say ~it can be the right side or the other side or standing on the des…

Coin Change Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 10289    Accepted Submission(s): 3451 Problem Description Suppose there are 5 types of coins: 50-cent, 25-cent, 10-cent, 5-cent, and 1…