#include<bits/stdc++.h>
using namespace std;
#define INF 1234567


int main(){
  int N, a, b, c, ma = 0, mi = INF;

  cin>>N;

  for(int i = 1; i <= N; i++){
    cin>>a;
 
    if(i-1)mi = min(mi, a-b);
    else c = a;
    b = a;
  }

  cout<<mi<<endl<<a-c<<endl;

  return 0;
}