use std::io::{Read, stdin};

fn main() {
    let mut buf = String::new();
    stdin().read_to_string(&mut buf).unwrap();
    let mut tok = buf.split_whitespace();
    let mut get = || tok.next().unwrap();
    macro_rules! get {
        ($t:ty) => (get().parse::<$t>().unwrap());
        () => (get!(i64));
    }
    
    let n = get!(usize);
    let mut a = vec![];
    for _ in 0..n {
        a.push(get!());
    }
    let max = a[n-1] - a[0];
    for i in 1..n {
        a[i-1] = a[i]-a[i-1];
    }
    println!("{}", a.iter().take(n-1).min().unwrap());
    println!("{}", max);
}