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可以让背包当前的重量作为状态。#include<stdio.h>
struct bracelet
{
int w;
int v;
};
struct bracelet b[3410];
int dp[12990];
int n,m;
void main()
{
int i,j;
scanf("%d%d",&n,&m);
for(i=1;i<=n;i++)
{
scanf("%d%d",&b[i].w,&b[i].v);
}
for(i=1;i<=n;i++)
{
for(j=0;j+b[i].w<=m;j++)
{
if(dp[j]<dp[j+b[i].w]+b[i].v)
dp[j]=dp[j+b[i].w]+b[i].v;
}
}
printf("%d",dp[0]);
}
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