#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  VI a(n);
  rep(i, n) cin >> a[i];
  vector<P> seg, nseg;
  rep(i, n) seg.emplace_back(i, i);
  constexpr int INF = 1001001001;
  ll ans = INF;
  int ans_x = -1;
  for(int x = 1; x <= 2 * n; x++) {
    nseg.clear();
    int pre = -INF;
    int cnt = 0;
    for(auto [l, r]: seg) {
      cnt += a[r] / x - a[l] / x + 1;
      if (a[l] - pre == x) {
        nseg.back().second = r;
      } else {
        nseg.emplace_back(l, r);
      }
      pre = a[r];
    }
    swap(seg, nseg);
    if (chmin(ans, ll(x + 1) * cnt)) {
      ans_x = x;
    }
  }
  cout << ans_x << '\n' << ans << '\n';
}