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- #include <cstdio>
- #include <algorithm>
- using namespace std;
- typedef unsigned char uchar;
- typedef unsigned uint;
- int a[30000];
- int mlc[25001];
- bool res[30000];
- int main()
- {
- uint n;scanf("%u",&n);
- uint sum=0;
- for(int i=0;i<n;i++)
- {
- scanf("%u",&a[i]);
- sum+=a[i];
- }
- uint osum=sum;
- sum>>=1;
- for(int i=0;i<=sum;i++)
- {
- if(i!=a[0])mlc[i]=-1;
- else
- {
- mlc[i]=0;
- }
- }
- uint currsum=a[0];
- for(int i=1;i<n;i++)
- {
- currsum=min(currsum+a[i],sum);
- for(int j=currsum;j>=0;j--)
- if(mlc[j]!=-1 && j+a[i]<=currsum && mlc[j+a[i]]==-1)mlc[j+a[i]]=i;
- }
- int mj=0;
- for(mj=sum;mj>=0;mj--)if(mlc[mj]!=-1)break;
- printf("%u %u\n",mj,osum-mj);
- int p=mj;
- while(p>=0)
- {
- if(mlc[p]==-1)break;
- res[mlc[p]]=true;
- p=p-a[mlc[p]];
- }
- bool fst=true;
- for(int i=0;i<n;i++)
- if(res[i])
- {
- if(fst)fst=false;
- else printf(" ");
- printf("%d",i+1);
- }
- printf("\n");
- fst=true;
- for(int i=0;i<n;i++)
- if(!res[i])
- {
- if(fst)fst=false;
- else printf(" ");
- printf("%d",i+1);
- }
- printf("\n");
- return 0;
- }
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