思路: 多重背包转成01背包,怎么转?把一种大米看成一堆单个的物品,每件物品要么装入,要么不装.复杂度比01背包要大.时间复杂度为O(vns)(这里S是所有物品的数量s之和).这个做法太粗糙了,但就是AC了.假如某一种大米有很多件,那麻烦大了. 0MS 1084K 706B C++ 这是用“单纯转01背包”实现的,速度还这么快,还需优化不? # include <stdio.h> # include <string.h> ] ;//转成01背包的解法,没有任何优化. int max…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6092 #include <cstdio> #include <iostream> #include <cstring> using namespace std; ; int b[maxn] , dp[maxn] , n , m; int main() { int t; scanf("%d", &t); while(t--) { scanf(&qu…
Whuacmers use coins.They have coins of value A1,A2,A3...An Silverland dollar. One day Hibix opened purse and found there were some coins. He decided to buy a very nice watch in a nearby shop. He wanted to pay the exact price(without change) and he kn…
Problem Description Whuacmers use coins.They have coins of value A1,A2,A3...An Silverland dollar. One day Hibix opened purse and found there were some coins. He decided to buy a very nice watch in a nearby shop. He wanted to pay the exact price(witho…