/*/ Author: kal013 /*/
// #pragma GCC optimize ("O3")
#include "bits/stdc++.h"
#include "ext/pb_ds/assoc_container.hpp"
#include "ext/pb_ds/tree_policy.hpp"
using namespace std;
using namespace __gnu_pbds;

template<class T> 
using ordered_set = tree<T, null_type,less<T>, rb_tree_tag,tree_order_statistics_node_update> ;

template<class key, class value, class cmp = std::less<key>>
using ordered_map = tree<key, value, cmp, rb_tree_tag, tree_order_statistics_node_update>;
// find_by_order(k)  returns iterator to kth element starting from 0;
// order_of_key(k) returns count of elements strictly smaller than k;

template<class T>
using min_heap = priority_queue<T,vector<T>,greater<T> >; 

struct custom_hash { // Credits: https://codeforces.com/blog/entry/62393
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
    size_t operator()(pair<int64_t,int64_t> Y) const{
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(Y.first * 31 + Y.second + FIXED_RANDOM);
    }
};

template<class T> ostream& operator<<(ostream &os, vector<T> V) {
    os << "[ ";
    for(auto v : V) os << v << " ";
    return os << "]";
}
template<class T> istream& operator>>(istream &is, vector<T>& V) {
    for(auto &e : V)
        is >> e;
    return is;
}

#ifdef __SIZEOF_INT128__
ostream& operator << (ostream &os, __int128 T){
    const static long long N = (long long)(1e18);
    if (T < 0){
        os << '-';
        T *= -1;
    }
    unsigned long long a = T / N, b = T % N;
    if (a == 0)
        return os << b ;
    os << a;
    __int128 mul = 10;
    while( mul*b < N){
        os << '0';
        mul *= 10;
    }
    return os << b;
}
istream& operator >> (istream& is, __int128& T){
    string U;
    is >> U;
    T = 0;
    size_t pos = 0;
    int mul = 1;
    if (U[pos] == '-'){
        ++pos;
        mul *= -1;
    }
    for(; pos < U.size(); ++pos){
        T *= 10;
        T += (U[pos] - '0');
    }
    T *= mul;

    return is;
}
#endif
template<class T> ostream& operator<<(ostream &os, set<T> S){
    os << "{ ";
    for(auto s:S) os<<s<<" ";
    return os<<"}";
}
template<class T> ostream& operator<<(ostream &os, unordered_set<T> S){
    os << "{ ";
    for(auto s:S) os<<s<<" ";
    return os<<"}";
}
template<class T> ostream& operator << (ostream& os, multiset<T> S){
    os << "{ ";
    for(auto s:S) os<<s<<" ";
    return os<<"}";
}
template<class T> ostream& operator<<(ostream &os, ordered_set<T> S){
    os << "{ ";
    for(auto s:S) os<<s<<" ";
    return os<<"}";
}
template<class L, class R> ostream& operator<<(ostream &os, pair<L,R> P) {
    return os << "(" << P.first << "," << P.second << ")";
}
template<class L, class R> ostream& operator<<(ostream &os, map<L,R> M) {
    os << "{ ";
    for(auto m:M) os<<"("<<m.first<<":"<<m.second<<") ";
    return os<<"}";
}
template<class L, class R, class chash = std::hash<R>> ostream& operator<<(ostream &os, unordered_map<L,R,chash> M) {
    os << "{ ";
    for(auto m:M) os<<"("<<m.first<<":"<<m.second<<") ";
    return os<<"}";
}
template<class L, class R, class chash = std::hash<R> > ostream& operator<<(ostream &os, gp_hash_table<L,R,chash> M) {
    os << "{ ";
    for(auto m:M) os<<"("<<m.first<<":"<<m.second<<") ";
    return os<<"}";
}

#define TRACE
#ifdef TRACE
    #define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <typename Arg1>
    void __f(const char* name, Arg1&& arg1){
        cerr << name << " : " << arg1 << endl;
    }
    template <typename Arg1, typename... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args){
        const char* comma = strchr(names + 1, ',');
        cerr.write(names, comma - names) << " : " << arg1<<" | ";
        __f(comma+1, args...);
    }
#else
    #define trace(...) 1
#endif

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

inline int64_t random_long(long long l,long long r){
    uniform_int_distribution<int64_t> generator(l,r);
    return generator(rng);
}
inline int64_t random_long(){
    uniform_int_distribution<int64_t> generator(LLONG_MIN,LLONG_MAX);
    return generator(rng);
}


/*/---------------------------Defines----------------------/*/
typedef vector<int> vi;
typedef pair<int,int> pii;

#define For(i,n) for(int i = 0; i < (int) n; ++i)
#define Rep(i,n) for(int i = 1; i <= (int) n; ++i)
#define ll long long
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(v) (v).begin(),(v).end()
/*/-----------------------Modular Arithmetic---------------/*/

const int mod=1e9+7;

const int base = 1000000000;
const int base_digits = 9;
struct Int {
   	// Credits : https://codeforces.com/blog/entry/67827
    vector<int> a;
    int sign;
   
    /*<arpa>*/
   
    int size(){
        if(a.empty()) return 0;
        int ans=(a.size()-1)*base_digits;
        int ca=a.back();
        while(ca)
            ans++,ca/=10;
        return ans;
    }
   
    Int operator ^(const Int &v){
        Int ans=1,a=*this,b=v;
        while(!b.isZero()){
            if(b%2)
            ans*=a;
            a*=a,b/=2;
        }
        return ans;
    }
   
    string to_string(){
        stringstream ss;
        ss << *this;
        string s;
        ss >> s;
        return s;
    }
   
    int sumof(){
        string s = to_string();
        int ans = 0;
        for(auto c : s)  ans += c - '0';
        return ans;
    }
   
    /*</arpa>*/
   
    Int() :
    sign(1) {
    }
 
    Int(long long v) {
        *this = v;
    }
 
    Int(const string &s) {
        read(s);
    }
 
    void operator=(const Int &v) {
        sign = v.sign;
        a = v.a;
    }
 
    void operator=(long long v) {
        sign = 1;
        a.clear();
        if (v < 0)
            sign = -1, v = -v;
        for (; v > 0; v = v / base)
            a.push_back(v % base);
    }
 
    Int operator+(const Int &v) const {
        if (sign == v.sign) {
            Int res = v;
            for (int i = 0, carry = 0; i < (int) max(a.size(), v.a.size()) || carry; ++i) {
                if (i == (int) res.a.size())
                    res.a.push_back(0);
                res.a[i] += carry + (i < (int) a.size() ? a[i] : 0);
                carry = res.a[i] >= base;
                if (carry)
                    res.a[i] -= base;
            }
            return res;
        }
        return *this - (-v);
    }
 
    Int operator-(const Int &v) const {
        if (sign == v.sign) {
            if (abs() >= v.abs()) {
                Int res = *this;
                for (int i = 0, carry = 0; i < (int) v.a.size() || carry; ++i) {
                    res.a[i] -= carry + (i < (int) v.a.size() ? v.a[i] : 0);
                    carry = res.a[i] < 0;
                    if (carry)
                    res.a[i] += base;
                }
                res.trim();
                return res;
            }
            return -(v - *this);
        }
        return *this + (-v);
    }
 
    void operator*=(int v) {
        if (v < 0)
            sign = -sign, v = -v;
        for (int i = 0, carry = 0; i < (int) a.size() || carry; ++i) {
            if (i == (int) a.size())
                a.push_back(0);
            long long cur = a[i] * (long long) v + carry;
            carry = (int) (cur / base);
            a[i] = (int) (cur % base);
            //asm("divl %%ecx" : "=a"(carry), "=d"(a[i]) : "A"(cur), "c"(base));
        }
        trim();
    }
 
    Int operator*(int v) const {
        Int res = *this;
        res *= v;
        return res;
    }
 
    void operator*=(long long v) {
        if (v < 0)
            sign = -sign, v = -v;
        for (int i = 0, carry = 0; i < (int) a.size() || carry; ++i) {
            if (i == (int) a.size())
                a.push_back(0);
            long long cur = a[i] * (long long) v + carry;
            carry = (int) (cur / base);
            a[i] = (int) (cur % base);
            //asm("divl %%ecx" : "=a"(carry), "=d"(a[i]) : "A"(cur), "c"(base));
        }
        trim();
    }
 
    Int operator*(long long v) const {
        Int res = *this;
        res *= v;
        return res;
    }
 
    friend pair<Int, Int> divmod(const Int &a1, const Int &b1) {
        int norm = base / (b1.a.back() + 1);
        Int a = a1.abs() * norm;
        Int b = b1.abs() * norm;
        Int q, r;
        q.a.resize(a.a.size());
 
        for (int i = a.a.size() - 1; i >= 0; i--) {
            r *= base;
            r += a.a[i];
            int s1 = r.a.size() <= b.a.size() ? 0 : r.a[b.a.size()];
            int s2 = r.a.size() <= b.a.size() - 1 ? 0 : r.a[b.a.size() - 1];
            int d = ((long long) base * s1 + s2) / b.a.back();
            r -= b * d;
            while (r < 0)
                r += b, --d;
            q.a[i] = d;
        }
 
        q.sign = a1.sign * b1.sign;
        r.sign = a1.sign;
        q.trim();
        r.trim();
        return make_pair(q, r / norm);
    }
 
    Int operator/(const Int &v) const {
        return divmod(*this, v).first;
    }
 
    Int operator%(const Int &v) const {
        return divmod(*this, v).second;
    }
 
    void operator/=(int v) {
        if (v < 0)
            sign = -sign, v = -v;
        for (int i = (int) a.size() - 1, rem = 0; i >= 0; --i) {
            long long cur = a[i] + rem * (long long) base;
            a[i] = (int) (cur / v);
            rem = (int) (cur % v);
        }
        trim();
    }
 
    Int operator/(int v) const {
        Int res = *this;
        res /= v;
        return res;
    }
 
    int operator%(int v) const {
        if (v < 0)
            v = -v;
        int m = 0;
        for (int i = a.size() - 1; i >= 0; --i)
            m = (a[i] + m * (long long) base) % v;
        return m * sign;
    }
 
    void operator+=(const Int &v) {
        *this = *this + v;
    }
   
    void operator-=(const Int &v) {
        *this = *this - v;
    }
   
    void operator*=(const Int &v) {
        *this = *this * v;
    }
   
    void operator/=(const Int &v) {
        *this = *this / v;
    }
   
    Int operator ++(){
        *this += 1;
        return *this;
    }
   
    Int operator ++(int){
        Int temp = *this;
        *this += 1;
        return temp;
    }
   
    Int operator --(){
        *this -= 1;
        return *this;
    }
   
    Int operator --(int){
        Int temp = *this;
        *this -= 1;
        return temp;
    }
 
    bool operator<(const Int &v) const {
        if (sign != v.sign)
            return sign < v.sign;
        if (a.size() != v.a.size())
           return a.size() * sign < v.a.size() * v.sign;
        for (int i = a.size() - 1; i >= 0; i--)
            if (a[i] != v.a[i])
                return a[i] * sign < v.a[i] * sign;
        return false;
    }
 
    bool operator>(const Int &v) const {
        return v < *this;
    }
   
    bool operator<=(const Int &v) const {
        return !(v < *this);
    }
   
    bool operator>=(const Int &v) const {
        return !(*this < v);
    }
   
    bool operator==(const Int &v) const {
        return !(*this < v) && !(v < *this);
    }
   
    bool operator!=(const Int &v) const {
        return *this < v || v < *this;
    }
 
    void trim() {
        while (!a.empty() && !a.back())
            a.pop_back();
        if (a.empty())
            sign = 1;
    }
 
    bool isZero() const {
        return a.empty() || (a.size() == 1 && !a[0]);
    }
 
    Int operator-() const {
        Int res = *this;
        res.sign = -sign;
        return res;
    }
 
    Int abs() const {
        Int res = *this;
        res.sign *= res.sign;
        return res;
    }
 
    long long longValue() const {
        long long res = 0;
        for (int i = a.size() - 1; i >= 0; i--)
            res = res * base + a[i];
        return res * sign;
    }
 
    friend Int gcd(const Int &a, const Int &b) {
        return b.isZero() ? a : gcd(b, a % b);
    }
   
    friend Int lcm(const Int &a, const Int &b) {
        return a / gcd(a, b) * b;
    }
 
    void read(const string &s) {
        sign = 1;
        a.clear();
        int pos = 0;
        while (pos < (int) s.size() && (s[pos] == '-' || s[pos] == '+')) {
            if (s[pos] == '-')
                sign = -sign;
            ++pos;
        }
       
        for (int i = s.size() - 1; i >= pos; i -= base_digits) {
            int x = 0;
            for (int j = max(pos, i - base_digits + 1); j <= i; j++)
                x = x * 10 + s[j] - '0';
            a.push_back(x);
        }
        trim();
    }
 
    friend istream& operator>>(istream &stream, Int &v) {
        string s;
        stream >> s;
        v.read(s);
        return stream;
    }
 
    friend ostream& operator<<(ostream &stream, const Int &v) {
        if (v.sign == -1)
           stream << '-';
        stream << (v.a.empty() ? 0 : v.a.back());
        for (int i = (int) v.a.size() - 2; i >= 0; --i)
            stream << setw(base_digits) << setfill('0') << v.a[i];
        return stream;
    }
 
    static vector<int> convert_base(const vector<int> &a, int old_digits, int new_digits) {
        vector<long long> p(max(old_digits, new_digits) + 1);
        p[0] = 1;
        for (int i = 1; i < (int) p.size(); i++)
            p[i] = p[i - 1] * 10;
        vector<int> res;
        long long cur = 0;
        int cur_digits = 0;
        for (int i = 0; i < (int) a.size(); i++) {
            cur += a[i] * p[cur_digits];
            cur_digits += old_digits;
            while (cur_digits >= new_digits) {
                res.push_back(int(cur % p[new_digits]));
                cur /= p[new_digits];
                cur_digits -= new_digits;
            }
        }
        res.push_back((int) cur);
        while (!res.empty() && !res.back())
            res.pop_back();
        return res;
    }
 
    typedef vector<long long> vll;
 
    static vll karatsubaMultiply(const vll &a, const vll &b) {
        int n = a.size();
        vll res(n + n);
        if (n <= 32) {
            for (int i = 0; i < n; i++)
                for (int j = 0; j < n; j++)
                    res[i + j] += a[i] * b[j];
            return res;
        }
 
        int k = n >> 1;
        vll a1(a.begin(), a.begin() + k);
        vll a2(a.begin() + k, a.end());
        vll b1(b.begin(), b.begin() + k);
        vll b2(b.begin() + k, b.end());
 
        vll a1b1 = karatsubaMultiply(a1, b1);
        vll a2b2 = karatsubaMultiply(a2, b2);
 
        for (int i = 0; i < k; i++)
            a2[i] += a1[i];
        for (int i = 0; i < k; i++)
            b2[i] += b1[i];
 
        vll r = karatsubaMultiply(a2, b2);
       
        for (int i = 0; i < (int) a1b1.size(); i++)
            r[i] -= a1b1[i];
        for (int i = 0; i < (int) a2b2.size(); i++)
            r[i] -= a2b2[i];
 
        for (int i = 0; i < (int) r.size(); i++)
            res[i + k] += r[i];
        for (int i = 0; i < (int) a1b1.size(); i++)
            res[i] += a1b1[i];
        for (int i = 0; i < (int) a2b2.size(); i++)
            res[i + n] += a2b2[i];
        return res;
    }
 
    Int operator*(const Int &v) const {
        vector<int> a6 = convert_base(this->a, base_digits, 6);
        vector<int> b6 = convert_base(v.a, base_digits, 6);
       
        vll a(a6.begin(), a6.end());
        vll b(b6.begin(), b6.end());
       
        while (a.size() < b.size())
            a.push_back(0);
        while (b.size() < a.size())
            b.push_back(0);
        while (a.size() & (a.size() - 1))
            a.push_back(0), b.push_back(0);
           
        vll c = karatsubaMultiply(a, b);
        Int res;
        res.sign = sign * v.sign;
        for (int i = 0, carry = 0; i < (int) c.size(); i++) {
            long long cur = c[i] + carry;
            res.a.push_back((int) (cur % 1000000));
            carry = (int) (cur / 1000000);
        }
        res.a = convert_base(res.a, 6, base_digits);
        res.trim();
        return res;
    }
   
    //Added part.
   
    friend Int max(const Int &a,const Int &b){
        if(a>b){
            return a;
        }
        return b;
    }
   
    friend Int max(const Int &a,const int32_t &B){
        Int b = B;
        return max(a,b);
    }
   
    friend Int max(const Int &a,const int64_t &B){
        Int b = B;
        return max(a,b);
    }
   
    friend Int min(const Int &a,const Int &b){
        if(a>b){
            return b;
        }
        return a;
    }
   
    friend Int min(const Int &a,const int32_t &B){
        Int b = B;
        return min(a,b);
    }
   
    friend Int min(const Int &a,const int64_t &B){
        Int b = B;
        return min(a,b);
    }
   
    friend Int pow(const Int &a,const Int &b){
        Int _c = 1;
        Int _b = b;
        Int _a = a;
        while(_b != 0){
        	if(_b%2){
        		_c *= _a;
			}
			_a *= _a;
			_b /= 2;
		}
        return _c;
    }
   
    friend Int pow(const Int &a,const int32_t &B){
        Int b = B;
        return pow(a,b);
    }
   
    friend Int pow(const Int &a,const int64_t &B){
        Int b = B;
        return pow(a,b);
    }
   
    friend Int sqrt(Int a) {
        Int x0 = a, x1 = (a+1)/2;
        while (x1 < x0) {
            x0 = x1;
            x1 = (x1+a/x1)/2;
        }
        return x0;
    }
};

/*/-----------------------------Code begins----------------------------------/*/

void solve(){
   	int n;
   	cin >> n;
   	vector<Int> a(n);
   	cin >> a;

   	Int curr = 1000;

   	for(int i = 1; i < n; ++i){
   		if (a[i] > a[i-1]){
   			Int t = (curr/ a[i-1]);
   			curr += t * (a[i] - a[i-1]);
   		}
   		else{
   			// long long t = curr / a[i - 1];
   			// curr += t * (a[i - 1] - a[i]);
   		}
   	}

   	cout << curr << endl;
}
int main(){
    // Use "set_name".max_load_factor(0.25);"set_name".reserve(512); with unordered set
    // Or use gp_hash_table<X,null_type>
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    cout<<fixed<<setprecision(25);
    cerr<<fixed<<setprecision(10);
    auto start = std::chrono::high_resolution_clock::now();
    int t=1;
    while(t--) {
        solve();
    }
    auto stop = std::chrono::high_resolution_clock::now(); 
    auto duration = std::chrono::duration_cast<std::chrono::nanoseconds>(stop - start); 
    
    // cerr << "Time taken : " << ((long double)duration.count())/((long double) 1e9) <<"s "<< endl;     
}

Measured memory_bytes: 3680