fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<isize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

    let mut lefts = vec![0usize; n];
    let mut rights = vec![0usize; n];
    for i in 0..n-1 {
        lefts[i+1] = lefts[i] + if a[i] < a[i+1] { 1 } else { 0 };
    }
    for i in (0..n-1).rev() {
        rights[i] = rights[i+1] + if a[i] > a[i+1] { 1 } else { 0 };
    }
    let result = (0..n).map(|i| lefts[i].min(rights[i])).sum::<usize>();
    println!("{}", result);
}