一.问题描述 物品无限的背包问题:有n种物品,每种均有无穷多个.第 i 种物品的体积为Vi,重量为Wi.选一些物品装到一个容量为 C 的背包中,求使得背包内物品总体积不超过C的前提下重量的最大值.1≤n≤100, 1≤Vi≤C≤10000, 1≤Wi≤1000000. 二.解题思路 我们可以先求体积恰好为 i 时的最大重量(设为d[i]),然后取d[i]中的最大值(i ≤ C).与之前硬币问题,“面值恰好为S”就类似了.只不过加了新属性——重量,相当于把原来的无权图改成带权图,即把“+1”变成“…
描述 https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=378 n种方块,给出每一种的长宽高,现在要落起来,上面的方块的长和宽要严格小于下面的方块,问最多落多高. ACM Contest Problems ArchiveUniversity of Valladolid (SPAIN)437 The Tower of BabylonPerhap…
A OpenJ_Bailian 1088 滑雪 B OpenJ_Bailian 1579 Function Run Fun C HDU 1078 FatMouse and Cheese D POJ 3280 Cheapest Palindrome E OpenJ_Bailian 1976 A Mini Locomotive F OpenJ_Bailian 2111 Millenium Leapcow G OpenJ_Bailian 1141 B…
对这个奇形怪状的图tarjan,然后重新连边把图变成DAG,然后记忆化搜索即可 #include<iostream> #include<cstdio> using namespace std; const int N=100005; int n,a[N],h[N],cnt,dfn[N],low[N],tot,s[N],top,bl[N],si[N],col,mp[N]; bool v[N]; struct qwe { int ne,to; }e[N]; int read() { i…
Test for Job Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 8990 Accepted: 2004 Description Mr.Dog was fired by his company. In order to support his family, he must find a new job as soon as possible. Nowadays, It's hard to have a job…
Stacking Boxes Background Some concepts in Mathematics and Computer Science are simple in one or two dimensions but become more complex when extended to arbitrary dimensions. Consider solving differential equations in several dimensions and analyzi…
非常好的题!和spoj 的 Mobile Service有点相似,用记忆化搜索很容易解决 看了网上的题解,也是减掉一维,刚好可以开下数组 https://blog.lucien.ink/archives/224/ #include<bits/stdc++.h> using namespace std; #define maxn 2005 int n,A[maxn],B[maxn]; ][][][]; //状态:准备去拉第i个人,当前在cur楼,另外三个人的目标楼层是abc int dfs(in…
time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output As we all know, Max is the best video game player among her friends. Her friends were so jealous of hers, that they created an actual game ju…
Problem UVA - 10917 - Walk Through the Forest Time Limit: 3000 mSec Problem Description Jimmy experiences a lot of stress at work these days, especially since his accident made working difficult. To relax after a hard day, he likes to walk home. To…
Forwarding Emails Time Limit: 1000ms Memory Limit: 131072KB This problem will be judged on UVA. Original ID: 1244264-bit integer IO format: %lld Java class name: Main Prev Submit Status Statistics Discuss Next Type: None None Graph Theory 2-SA…
D. MADMAX time limit per test1 second memory limit per test256 megabytes Problem Description As we all know, Max is the best video game player among her friends. Her friends were so jealous of hers, that they created an actual game just to prove that…
1.直接用递归函数计算状态转移方程,效率十分低下,可以考虑用递推方法,其实就是“正着推导,逆着计算” #include<iostream> #include<algorithm> using namespace std; #define maxn 1000+5 int n; int a[maxn][maxn]; int d[maxn][maxn]; int main(){ for(;cin>>n && n;){ memset(d,,sizeof(d));…
