Cod sursă (job #545542)

#include <bits/stdc++.h>
using namespace std;
int n,i,t[100005];
long long rs;
int main()
{
	freopen("lanterna.in","r",stdin);
	freopen("lanterna.out","w",stdout);
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n;
	for(i=1;i<=n;i++)cin>>t[i];
	sort(t+1,t+n+1);
    while(n>=4)
    {
		rs+=min(t[1]+2*t[2]+t[n],2*t[1]+t[n]+t[n-1]);
		n-=2;
	}
	if(n==2)rs+=t[2];
	if(n==3)rs+=t[1]+t[2]+t[3];
	cout<<rs<<endl;
	return 0;
}