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- #include <iostream>
- #include <fstream>
- using namespace std;
- int v[1001],i,n,j;
- int main()
- {
- ifstream fin("halfsort2.in");
- ofstream fout("halfsort2.out");
- fin>>n;
- for(i=1; i<=n; i++)
- fin>>v[i];
- for(i=1; i<n; i+=2)
- for(j=i+2; j<=n; j+=2)
- if(v[i]<v[j])
- swap(v[i],v[j]);
- for(i=2; i<n; i+=2)
- for(j=i+2; j<=n; j+=2)
- if(v[i]>v[j])
- swap(v[i],v[j]);
- for(i=1; i<=n; i++)
- fout<<v[i]<<" " ;
- fin.close();
- fout.close();
- return 0;
- }
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