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Cod sursă (job #692273)
Cod sursă (job
#692273)
#include <fstream>
#include <algorithm>
using namespace std;
ifstream fin("lanterna.in");
ofstream fout("lanterna.out");
int n,v[100001];
long long d[100001];
int main()
{
fin >> n;
for(int i=1;i<=n;i++)
{
fin >> v[i];
}
sort(v+1,v+n+1);
d[2]=v[2];
d[3]=v[1]+v[2]+v[3];
for(int i=4;i<=n;i++)
d[i]=min(v[1]+v[i]+d[i-1],2*v[2]+v[1]+v[i]+d[i-2]);
fout << d[n];
return 0;
}