#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    clock_t finish = clock() + CLOCKS_PER_SEC / 1000 * 1920;
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n);
    for(auto &&v:a)cin >> v;
    int pos = -1;
    int ans = 1 << 30;
    if(2 * n < ans){
        ans = 2 * n;
        pos = 1;
    }
    if(a.back() + 2 < ans){
        ans = a.back() + 2;
        pos = a.back() + 1;
    }
    int zi = 0;
    vector<int> b(n);
    auto f = [&](int v){
        int cnt = 1;
        //while(zi < n && a[zi] < v) zi++;
        //if(zi) b[zi - 1] = 0;
        for(int i = zi; i < n; i++){
            b[i] = a[i] / v;
            if(i >= 1 && b[i] != b[i - 1])cnt++;
        }
        return (ll)(cnt) * (v + 1);
    };
    for(int i = 0; i < 30 && clock() <= finish; i++){
        ll v = f(1 << i);
        if(v < ans){
            ans = v;
            pos = 1 << i;
        }
    }
    zi = 0;
    for(int i = 0; i < 30 && clock() <= finish; i++){
        ll v = f((1 << i) + 1);
        if(v < ans){
            ans = v;
            pos = (1 << i) + 1;
        }
    }
    cout << pos << '\n';
    cout << ans << '\n';
}