mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
#include<iostream>
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#include<cstdio>
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#include<cstring>
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#include<cmath>
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#include<algorithm>
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using namespace std;
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const int N=1000;
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int a1[N],p1[N],a2[N],p2[N],res[N],a[N],b[N];
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int m;
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void dp(int k)
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{
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int i,j;
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memset(res,-1,sizeof(res));
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res[0]=0;
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while (k>0)
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{
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if (k&1)
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{
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for (i=0; i<=m; i++) b[i]=res[i];
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memset(res,-1,sizeof(res));
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for (i=0; i<=m; i++)
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for (j=0; j<=i; j++)
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if (b[j]>-1 && a[i-j]>-1)
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res[i]=max(res[i],b[j]+a[i-j]);
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}
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for (i=0; i<=m; i++) b[i]=a[i];
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memset(a,-1,sizeof(a));
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for (i=0; i<=m; i++)
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for (j=0; j<=i/2; j++)
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if (b[j]>-1 && b[i-j]>-1)
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a[i]=max(a[i],b[j]+b[i-j]);
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k>>=1;
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}
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}
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int main()
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{
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int n,n1,n2,i,j,ans;
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while (scanf("%d%d",&n,&m)==2)
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{
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if (n==0 && m==0) break;
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scanf("%d",&n1);
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for (i=1; i<=n1; i++) scanf("%d%d",&a1[i],&p1[i]);
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scanf("%d",&n2);
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for (i=1; i<=n2; i++) scanf("%d%d",&a2[i],&p2[i]);
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memset(a,-1,sizeof(a));
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for (i=1; i<=n1; i++)
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for (j=1; j<=n2; j++)
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if (a1[i]+a2[j]<=m)
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a[a1[i]+a2[j]]=max(a[a1[i]+a2[j]],p1[i]+p2[j]);
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dp(n);
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ans=0;
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for (i=0; i<=m; i++) ans=max(ans,res[i]);
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printf("%d\n",ans);
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}
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}
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