hdu 2191

 多重背包，先前一直不过，想回去睡觉。刚修改了一下用移位运算进行二进制模拟，没想到就过了。

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


void OneZero(int V,int cost,int value,int *dp){
	for(int j = V;j>=cost;--j){
		if(dp[j] < dp[j - cost] + value){
			dp[j] = dp[j - cost] + value;
		}
	}
	return ;
}


int main(int argc, char *argv[])
{
	//FILE *fp;	
	//fp = freopen("in1.txt","r",stdin);
	
	int t,N,M,each_v[110],value[110],cost[110],num[110],dp[110];
	scanf("%d",&t);
	while(t--){
		
		scanf("%d%d",&N,&M);
		for(int i = 0;i<M;++i){
			scanf("%d%d%d",&cost[i],&value[i],&num[i]);
		}
		
		memset(dp,0,sizeof(dp));
		for(int i = 0;i<M;++i){
			//int temp = 1; 
			int j = 0;
			int k = 1;
			
			for(;k < num[i];++j){
			
				OneZero(N,k*cost[i],k*value[i],dp); 
				num[i] -= k;
				k <<= 1;
			}
			
			OneZero(N,num[i]*cost[i],num[i]*value[i],dp); 
		}
		printf("%d\n",dp[N]);
	}
	return 0;
}