#include <bits/stdc++.h>
using namespace std;
     
  int main(){
      int N;
      cin >> N;
      int a[100];
      int M=1000;
      int money=1000;
      int stock=0;
      for (int i=0; i<N; i++){
        cin >> a[i];
      }
      
      for (int i=0; i<N-1; i++){
        if(a[i]<a[i+1] && stock==0){
          stock = M/a[i];
          M -= a[i]*stock;
        }
        else if(a[i]>a[i+1] && stock>0){
          M += a[i]*stock;
          money = M;
          stock = 0;
        }
      }
      if(M>money){
        cout << M << endl;
      }
      else{
       cout << m << endl;
      } 
    }