#pragma GCC optimize("Ofast")
#define _USE_MATH_DEFINES
#include "bits/stdc++.h"

using namespace std;

using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using i8 = int8_t;
using i16 = int16_t;
using i32 = int32_t;
using i64 = int64_t;

constexpr char newl = '\n';
constexpr double eps = 1e-10;

#define FOR(i,a,b) for (int i = (a); i < (b); i++)
#define F0R(i,b) FOR(i,0,b)
#define RFO(i,a,b) for (int i = ((b)-1); i >=(a); i--)
#define RF0(i,b) RFO(i,0,b)
#define fi first
#define se second
#define debug(x) cout << #x << ": " << x << '\n';
#define rng(a) a.begin(),a.end()
#define rrng(a) a.rbegin(),a.rend()

template<typename T1, typename T2> inline void chmin(T1& a, T2 b) { if (a > b) a = b; }
template<typename T1, typename T2> inline void chmax(T1& a, T2 b) { if (a < b) a = b; }
template<class T> void Print(vector<T> v) {
  F0R(i, v.size()) {
    cout << v[i] << ' ';
  }
  cout << newl;
}

#if 1


// INSERT ABOVE HERE
signed main() {
  cin.tie(0);
  ios_base::sync_with_stdio(false);

  int N;
  cin >> N;
  vector<int> as(N);
  F0R(i, N) {
    cin >> as[i];
  }

  auto kau = [&](int day, i64 &yen, i64 &kabu) {
    i64 n = yen / as[day];
    yen -= as[day] * n;
    kabu += n;
    //cout << "kau " << a << "\n";
  };
  auto uru = [&](int day, i64& yen, i64& kabu) {
    yen += as[day] * kabu;
    kabu = 0;
    //cout << "uru " << a << "\n";
  };

  i64 result = 0;
  auto dfs = [&](auto dfs, int day, i64 yen, i64 kabu)->void {
    if (day == N) {
      chmax(result, yen);
      return;
    }
    else if (day == N - 1) {
      uru(day, yen, kabu);
      dfs(dfs, day + 1, yen, kabu);
    }
    else {
      // なにもしない
      dfs(dfs, day + 1, yen, kabu);

      if (kabu) {
        if (as[day - 1] < as[day]) {
          uru(day, yen, kabu);
          dfs(dfs, day + 1, yen, kabu);
        }
      }
      else {
        if (day == 0 || as[day - 1] > as[day]) {
          kau(day, yen, kabu);
          dfs(dfs, day + 1, yen, kabu);
        }
      }
    }

  };
  dfs(dfs, 0, 1000, 0);

  cout << result;
}
#endif
