#include <bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin >> n;
	vector<int> a(n);
	for(int i=0; i<n; ++i) cin >> a[i];

	long long money=1000, stock=0;
	for(int i=0; i<n-1; ++i){
		if(a[i]<a[i+1]){
			stock = money/a[i];
			money %= a[i];
		}
		money += stock*a[i+1];
		stock=0;
	}
	cout << money << endl;
}