#include <bits/stdc++.h>
#define int long long
using namespace std;

signed main(){
	int n,x=1000,b;
	cin>>n;
	
	int a[n+1];
	
	for(int i=1;i<=n;i++) 
        cin>>a[i];
        
	for(int i=1;i<n;i++)
		if(a[i+1]>a[i]){
			b=x/a[i];
			x%=a[i];
			b*=a[i+1];
			x+=b;
		}
		
	cout<<x<<"\n";
	return 0;
}