转化一下,相当于从$0$跳到$M$,每一步跳跃距离为$v_i$中的某个,每次跳跃距离不大于上一次,统计方案数 用$f_{i,j,k}$表示跳到$i$,第一步跳$v_j$,最后一步跳$\geq v_k$的方案数,那么有转移$f_{a+b,i,j}=\sum\limits_{k=1}^nf_{a,i,k}f_{b,k,j}$,跟矩阵乘法一模一样,所以我们可以把每个$f_i$看成矩阵,用矩阵乘法转移 先预处理出$f_{v_{1\cdots n}}$,显然$f_{v_1,1,1}=1,f_{v_1,i,…

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 <=…

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…

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,…

题意:给出1,5,10,25,50五种硬币,再给出n,问有多少种不同的方案能够凑齐n 自己写的时候写出来方案数老是更少(用的一维的) 后来搜题解发现,要用二维的来写 http://blog.csdn.net/keshuai19940722/article/details/11025971 这一篇说的是会有面值的重复问题,还不是很理解 还有就是一个预处理的问题, 看了题解之后再自己写,很习惯的把处理dp数组写到while循环里面,一直tle 后来看到这篇题解 http://www.cnblogs.…

Something cost $10.25 and the customer pays with a $20 bill, the program will print out the most efficient "change-breakdown" which is 1 five, 4 ones, and 3quarters. Find the minimum number of coins required to make change for a given sum (given…