#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef vector<ll> vi;
typedef pair<ll, ll> pi;
#define FOR(i, j, k) for (ll i = j; i < (ll) k; ++i)
#define FORD(i, j, k) for (ll i = j; i >= (ll) k; --i)
#define nl "\n"
#define sp " "
#define all(x) (x).begin(), (x).end()
#define sc second
#define fr first
#define pb emplace_back
// Binary Search, maybe
void solve()
{
ll n;
cin >> n;
ll t[n + 1];
FOR(i, 1, n + 1)
cin >> t[i];
// ll dp[n + 1][n + 1];
// dp[i][j] = min time taken for the first i customers if they are in j groups
// four possbilities
// all three in one group
ll op1 = max({t[1], t[2], t[3]}) * 3;
// all three in seperate groups
ll op2 = t[1] * 3 + t[2] * 2 + t[3];
// first two in one group
ll op3 = max(t[1], t[2]) * 3 + t[3];
// last two in one group
ll op4 = t[1] * 3 + max(t[2], t[3]);
cout << min({op1, op2, op3, op4}) << nl;
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
ll t = 1;
// cin >> t;
while (t--)
{
solve();
}
}
