poj3624 Charm Bracelet

赤裸裸的0-1背包问题

#include<iostream>using namespace std;#include<cstdio>int w[3405];int d[3405];int f[12885];int main(){int n,m,i,v;while(scanf("%d%d",&n,&m)!=EOF){for(i=1;i<=n;i++)scanf("%d%d",w+i,d+i);memset(f,0,sizeof(f));for(i=1;i<=n;i++)for(v=m;v>=w[i];v--)if(f[v]<f[v-w[i]]+d[i])f[v]=f[v-w[i]]+d[i];int M=0;for(i=1;i<=m;i++)if(f[i]>M)M=f[i];printf("%d/n",M);}return 0;}