Cod sursă (job #545307)

#include <bits/stdc++.h>
#include <iostream>
using namespace std;
ifstream in("lanterna.in"); ofstream out("lanterna.out");
int n,i,x,y,v[100001];
long long s;
int main()
{   in>>n;
							    	for(i=1;i<=n;i++) in>>v[i];
							    	sort(v+1,v+n+1);
											    while(n>3)
											    {   	
														x=v[1]+2*v[2]+v[n];
											        	y=2*v[1]+v[n-1]+v[n];
											       		s+=min(x,y);
											        	n-=2;
											    }
							    if(n==3) s+=v[1]+v[2]+v[3]; else s+=v[2];
    out<<s<<'\n'; out.close(); return 0;
}