using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

namespace MSolutions2020_D
{
    using static Ex;
    public class D
    {
        public static void Main(string[] args)
        {
            new ABC_D();
        }
    }

    public class ABC_D
    {
        int i = 1;
        int n;
        int[] a;
        long money = 1000;
        long kabu = 0;
        /// <summary>
        /// 減ってたら買わない
        /// 増えてたら、最安で買う
        ///
        /// 買った時より高くて、減り始めたら売る
        /// 増え始めたら、最安で買う
        ///
        /// 
        /// </summary>
        public ABC_D()
        {
            n = ReadInt;
            a = ReadIntArray();

            while (kau() && uru()) ;

            if (kabu > 0)
            {
                // 売る
                money += kabu * a[n - 1];
                kabu = 0;
            }
            money.Cw();
        }
        bool uru()
        {
            while (i < n)
            {
                // 増えてたら
                if (a[i - 1] < a[i])
                {
                    i++;
                    continue;
                }

                // 買った時より高くて、減り始めたら売る
                money += kabu * a[i - 1];
                kabu = 0;
                i++;
                return true;
            }
            return false;
        }
        bool kau()
        {
            while (i < n)
            {
                // 減ってたら買わない
                if (a[i - 1] > a[i])
                {
                    i++;
                    continue;
                }

                // 増えてたら、最安で買う
                kabu = money / a[i - 1];
                money %= a[i - 1];
                i++;
                return true;
            }
            return false;
        }
    }

    public static class Ex
    {
        public static void Cw(this object s) { Console.WriteLine(s); }



        public static bool Mins<T>(ref T a, T b) where T : IComparable<T> { if (a.CompareTo(b) > 0) { a = b; return true; } return false; }
        public static bool Maxs<T>(ref T a, T b) where T : IComparable<T> { if (a.CompareTo(b) < 0) { a = b; return true; } return false; }
        public static void Swap<T>(ref T a, ref T b) { var t = b; b = a; a = t; }
        public static void Swap<T>(List<T> list, int i, int j) { T tmp = list[j]; list[j] = list[i]; list[i] = tmp; }

        public static long Lcm(int x, int y) { return x / Gcd(x, y) * y; }
        public static long Gcd(long m, long n) { if (n == 0) return m; return Gcd(n, m % n); }
        public static List<string> FastSort(this List<string> s) { s.Sort(StringComparer.Ordinal); return s.ToList(); }
        public static void yesno(this bool b) { (b ? "yes" : "no").Cw(); }
        public static void YesNo(this bool b) { (b ? "Yes" : "No").Cw(); }
        public static void YESNO(this bool b) { (b ? "YES" : "NO").Cw(); }

        public static string Read { get { return Console.ReadLine().Trim(); } }
        public static int ReadInt { get { return int.Parse(Read); } }
        public static long ReadLong { get { return long.Parse(Read); } }
        public static double ReadDouble { get { return double.Parse(Read); } }
        public static string[] ReadArray() { return Read.Split(' '); }
        public static int[] ReadIntArray() { return Read.Split(' ').Select(int.Parse).ToArray(); }
        public static long[] ReadLongArray() { return Read.Split(' ').Select(long.Parse).ToArray(); }
        public static string[] ReadArray(long N) { var v = new string[N]; for (long i = 0; i < N; ++i) v[i] = Read; return v; }
        public static int[] ReadIntArray(long N) { var v = new int[N]; for (long i = 0; i < N; ++i) v[i] = ReadInt; return v; }
        public static long[] ReadLongArray(long N) { var v = new long[N]; for (long i = 0; i < N; ++i) v[i] = ReadLong; return v; }

        public static (T, T) ToTpl2<T>(this T[] v) { return (v[0], v[1]); }
        public static (T, T, T) ToTpl3<T>(this T[] v) { return (v[0], v[1], v[2]); }
        public static (T, T, T, T) ToTpl4<T>(this T[] v) { return (v[0], v[1], v[2], v[3]); }
        public static (T, T, T, T, T) ToTpl5<T>(this T[] v) { return (v[0], v[1], v[2], v[3], v[4]); }
    }
}


Measured memory_bytes: 28304