62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
#include <cstdio>
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#include <cstring>
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#include <cmath>
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#include <cstdlib>
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#include <vector>
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#include <map>
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#include <iostream>
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#include <algorithm>
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using namespace std;
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const int maxn=1e2+10;
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const int maxm=2e4+10;
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const int INF=1e8;
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int c[maxn],v[maxn],f[maxm],g[maxm];
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int main()
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{
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int n,m,tt=0;
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while(scanf("%d%d",&n,&m)!=EOF)
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{
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if(n==0&&m==0)break;
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int i,j,k;
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for(i=0;i<n;i++)
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scanf("%d",&v[i]);
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for(i=0;i<n;i++)
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scanf("%d",&c[i]);
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for(i=1;i<=20000;i++)
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{
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g[i]=f[i]=INF;
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}
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f[0]=g[0]=0;
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//瀹ㄨ
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for(i=0;i<n;i++)
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{
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for(j=v[i];j<=20000;j++)
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g[j]=min(g[j],g[j-v[i]]+1);
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}
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//澶
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for(i=0;i<n;i++)
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{
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if(v[i]*c[i]>=20000)
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{
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for(j=v[i];j<=20000;j++)
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f[j]=min(f[j],f[j-v[i]]+1);
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continue;
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}
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for(k=1;k<c[i];k=k*2)
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{
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for(j=20000;j>=v[i]*k;j--)
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f[j]=min(f[j],f[j-v[i]*k]+k);
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c[i]-=k;
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}
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for(j=20000;j>=c[i]*v[i];j--)
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f[j]=min(f[j],f[j-v[i]*c[i]]+c[i]);
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}
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int ans=INF;
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for(i=m;i<=20000;i++)
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ans=min(ans,f[i]+g[i-m]);
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if(ans==INF)ans=-1;
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printf("Case %d: %d\n",++tt,ans);
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}
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return 0;
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}
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