#include <bits/stdc++.h>#define N 1001
using namespace std;
int v[N];
int main(){ int n;
int pastile = 0; int maxim = INT_MIN;
cin >> n;
int i; for(i = 1; i <= n; i++) cin >> v[i];
for(i = 1; i < n; i++) { int d = v[i+1]- v[i]; if(d != 1) pastile++; if(d > maxim) maxim = d; }
cout << pastile << " " << maxim; return 0;}