http://poj.org/problem?id=3624
裸01背包
code:
#include <stdio.h>
#define M 13000
#define N 4000
int n, t;
int f[M];
int w[N], v[N];
int main() {
int i, j, max;
scanf("%d%d",&n,&t);
for(i=0; i< n; i++)
scanf("%d%d",&w[i],&v[i]);
for(i=0; i<n; i++)
for(j=t; j>=w[i]; j--)
if(f[j]<f[j-w[i] ]+ v[i]) f[j] = f[j-w[i]] + v[i];
max = f[0];
for(i=t; i>0; i--) if(max<f[i]) max= f[i];
printf("%d\n",max);
return 0;
}