#include <iostream>
using namespace std;
int main(){
    int N,a[1000],dist=2000000;
    cin >> N;
    for(int i=0;i<N;i++){
        cin >> a[i];
        if(i>0)dist=min(dist,a[i]-a[i-1]);
    }
    cout << dist << endl << a[N-1]-a[0] << endl;
    return 0;
}