hdu 2191 悼念512汶川大地震遇难同胞——珍惜现在，感恩生活

#include<stdio.h>
#include<string.h>
#include<iostream>
using namespace std;
int dp[102],W;
int p[102],w[102],num[102];
void pack(int cost,int weight)
{
for(int i=W;i>=weight;i--)
dp[i]=max(dp[i],dp[i-weight]+cost);
}
void ComletePack(int cost,int weight)
{
for(int i=weight;i<=W;i++)
dp[i]=max(dp[i],dp[i-weight]+cost);
}
void MultiPack(int weight ,int cost,int num)
{
if(num*cost>=W)
ComletePack(weight,cost);
else
{
int k=1;
while(k<num){
pack(weight*k,cost*k);
num-=k;k+=k;
}
pack(weight*num,cost*num);
}
}
int main(){
int T,n,i;
scanf("%d",&T);
while(T--)
{
scanf("%d%d",&W,&n);
for(i=0;i<n;i++)
scanf("%d%d%d",&p[i],&w[i],&num[i]);
memset(dp,0,sizeof(dp));
for(i=0;i<n;i++)
MultiPack(w[i],p[i],num[i]);
printf("%d\n",dp[W]);
}
return 0;
}