hdu2191 悼念512汶川大地震遇难同胞――珍惜现在，感恩生活 多重背包

</pre><pre name="code" class="cpp">#include<cstdio>
#include<cstring>
#include<cstdlib>
using namespace std;
#define Max(a,b) ((a>b)?a:b)
const int N = 102;
int dp
;
int main()
{
//freopen("text.in","r",stdin);
//freopen("my.in","w",stdout);
int cas, n, m;
while(~scanf("%d", &cas)) while(cas --)
{
memset(dp, 0, sizeof(dp));
int p, h, c, i;
scanf("%d%d", &n, &m);
while(m --)
{
scanf("%d%d%d", &p, &h, &c);
for(i = 1; i < c; i <<= 1)
{
for(int j = n; j >= i * p; j --)
dp[j] = Max(dp[j], dp[j-i*p] + i * h);
c -= i;
}
int t = c;
if(t) for(int j = n; j >= t * p; j --)
dp[j] = Max(dp[j], dp[j-t*p] + h * t);
}
printf("%d\n", dp
);
}
return 0;
}

#include<cstdio>
#include<cstdlib>
#include<cstring>
#define N 102
using namespace std;
#define Max(a,b) ((a>b)?a:b)
int dp
;
int weig
,value
,c
;
int main()
{
//freopen("text.in","r",stdin);
//freopen("std.in","w",stdout);
int t,i,j,wk,vk,vc,mk,k,n,m;
while(~scanf("%d",&t))
{
while(t --)
{
memset(dp,0,sizeof(dp));

scanf("%d%d",&n,&m);
for(i = 0; i < m; i ++)
scanf("%d%d%d",value+i,weig+i,c+i);

for(j = 0; j < m; j ++)
{
mk = c[j];
for(k = 1; mk > 0; k <<= 1)
{
mk -= k;
if(mk <0)
k += mk;
wk = weig[j] * k;
vk = value[j] * k;
for(i = n; i >= vk; i --)
dp[i] = Max(dp[i], dp[i - vk] + wk);
}
}

printf("%d\n",dp
);
}
}
return 0;
}