#include <iostream>
#include <vector>

using namespace std;

int main() {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++)cin >> a[i];

    int mi = 1145141919;
    for (int i = 0; i < n - 1; i++)mi = min(mi, a[i + 1] - a[i]);
    cout << mi << endl << a[n - 1] - a[0] << endl;
    return 0;
}