Canonical Coin Systems 题目描述 A coin system S is a finite (nonempty) set of distinct positive integers corresponding to coin values, also called denominations, in a real or imagined monetary system. For example, the coin system in common use in Canada…

问题 C: Canonical Coin Systems 时间限制: 1 Sec  内存限制: 128 MB 提交: 200  解决: 31 [提交] [状态] [命题人:admin] 题目描述 A coin system S is a finite (nonempty) set of distinct positive integers corresponding to coin values, also called denominations, in a real or imagined…

Description   John Doe is a famous DJ and, therefore, has the problem of optimizing the placement of songs on his tapes. For a given tape and for each song on that tape John knows the length of the song and the frequency of playing that song. His pro…

link:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=615 和完全背包一样的思想. #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #inc…

题目链接: https://vjudge.net/problem/UVA-674 题目大意: 有5种硬币, 面值分别为1.5.10.25.50,现在给出金额,问可以用多少种方式组成该面值. 思路: 每种硬币无限个,就是完全背包的题目,设dp[i][j]表示前i种纸币凑成价值为j的种数, 状态转移方程就可推出dp[i][j] = dp[i - 1][j] + dp[i - 1][j - w[i]] 初始化均为0,dp[0][0] = 1 #include<iostream> #include&l…

题目链接:http://www.lightoj.com/volume_showproblem.php?problem=1233 题目就不说明了. 背包的二进制优化,比如10可以表示为1 2 4 3,而这些数能表示1 ~ 10的任意的数.然后类似01背包就好了. #include <algorithm> #include <iostream> #include <cstring> #include <cstdlib> #include <cstdio&g…

传送门 背包 ——代码 #include <cstdio> #include <iostream> #define LL long long int v, n; LL f[10001]; inline int read() { int x = 0, f = 1; char ch = getchar(); for(; !isdigit(ch); ch = getchar()) if(ch == '-') f = -1; for(; isdigit(ch); ch = getchar(…

题目链接:http://codeforces.com/contest/284/problem/E 题意:n种类型的硬币,硬币的面值可能相同,现在要在满足一些限制条件下求出,用这些硬币构成t面值的方案数:每个限制条件:a,b表示a种类型的硬币要大于b种类型的硬币: 题解:显然如果哪些条件构成环的话就不存在直接输出0.那么可行的情况下要先预处理一下,假设a>b>c>d 那么最少的选择方式是(3,2,1,0)这个必须先预处理一下,然后还有,假如增加a的数量,那么b,c,d的数 量就不受影响,但…

Bits Reverse 题目链接 题目描述 Now given two integers x and y, you can reverse every consecutive three bits in arbitrary number's binary form (any leading zero can be taken into account) using one coin. Reversing (1,2,3) means changing it into (3,2,1). Could…

Chaarshanbegaan at Cafebazaar 题目链接 http://icpc.upc.edu.cn/problem.php?cid=1618&pid=1 题目描述 Chaarshanbegaan is a gathering event at Cafebazaar similar to TGIF events at Google. Some entertainment programs like pantomime, foosball, Xbox/PS4, and several…