#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {
	int n;
	cin >> n;
	vector<int> a(n),b(n-1);
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}
	for (int i = 0; i < n-1; i++) {
		b[i]=a[i+1]-a[i];
	}
	sort(b.begin(), b.end());
	cout << b[0] << endl;
	cout << b[n - 2] << endl;
}