c#include <bits/stdc++.h> using namespace std; int main(){ cin.tie(NULL); cout.tie(NULL); ios_base::sync_with_stdio(false); int N; cin >> N; vector<double> arr; for (int i = 0; i < N; i++) { double input; cin >> input; arr.push_back(input); } double ans = arr.back(); for (int i = N - 2; i >= 0; i--) { ans = ceil(ans / arr[i]) * arr[i]; } cout << (long long)ans << "\n"; return 0; }