#include "bits/stdc++.h"
using namespace std;
#define dbg(var) cout<<#var<<"="<<var<<" "
#define nl cout<<"\n"
#define fr(i,n) for(int i=0;i<n;i++)
#define rep(i,a,n) for(int i=a;i<=n;i++)
#define fast ios::sync_with_stdio(false);cin.tie(0);
#define vi vector<int>
#define vvi vector<vi>
#define pb push_back
#define fa(v) for(auto &i:v)
#define all(v) v.begin(),v.end()
#define sz(v) (int)(v.size())
#define int long long
//////////////   debugger class  starts from here///// 
void __print(int x) {cout << x;}
void __print(long x) {cout << x;}
void __print(long long x) {cout << x;}
void __print(unsigned x) {cout << x;}
void __print(unsigned long x) {cout << x;}
void __print(unsigned long long x) {cout << x;}
void __print(float x) {cout << x;}
void __print(double x) {cout << x;}
void __print(long double x) {cout << x;}
void __print(char x) {cout << '\'' << x << '\'';}
void __print(const char *x) {cout << '\"' << x << '\"';}
void __print(const string &x) {cout << '\"' << x << '\"';}
void __print(bool x) {cout << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cout << '{'; __print(x.first); cout << ','; __print(x.second); cout << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cout << '{'; for (auto &i: x) cout << (f++ ? "," : ""), __print(i); cout << "}";}
void _print() {cout << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cout << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cout << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

///////  debugger class ends here /////////////
int32_t main()
{
    int n ;cin >> n;vi v(n);fr(i,n) cin >> v[i];
    v.pb(-1);
    vvi lst;vi temp;
    fr(i,n){
    	temp.pb(v[i]);
    	if(v[i+1] < v[i]){
    		if(sz(temp)) lst.pb(temp);
    		temp.clear();
    	}
    }
    int cur = 1000, ans = 0;
    for(auto vv: lst){
    	int rem = cur % vv[0];
    	debug(cur);
    	cur = (vv.back()) * (cur / vv[0]);
    	debug(vv);
    	debug(cur);
    	cur += rem;
    }
    cout << cur;
}