poj1384-完全背包

具体可以到到网上搜索一下背包九讲,各种类型的背包,不过基础还是01背包。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define Min(a,b) (a<b?a:b)
#define Max(a,b) (a>b?a:b)
#define inf 0x0FFFFFFF
#define nMax 510
int E,F,N;
int price[nMax], weight[nMax];
int f[10010];
int newN;
void Dp01()
{
	f[0] = 0;
	for (int i = 1; i <= F-E; ++ i)
	{
		f[i] = inf;
	}
	for (int i = 1; i <= N; ++ i)
	{
		//for (int j = F-E; j >= weight[i]; -- j)
		for (int j = weight[i]; j <= F-E; ++ j)
		{
			f[j] = Min(f[j], f[j - weight[i]] + price[i]);
		}
	}
	if (f[F-E] != inf)
	{
		printf("The minimum amount of money in the piggy-bank is %d.\n", f[F-E]);
	}
	else
		printf("This is impossible.\n");
}
int main()
{
	int T;
	int p,w;
	scanf("%d", &T);
	while (T --)
	{
		newN = 1;
		scanf("%d %d", &E, &F);
		scanf("%d", &N);
		for (int i = 1; i <= N; ++ i)
		{
			scanf("%d %d", &price[i], &weight[i]);
			//scanf("%d %d", &p, &w);
			//getNewPW(p, w);
		}
		Dp01();
	}
}


 

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