use std::env::args;
use std::fs::File;
use std::io::BufRead;
use std::io::BufReader;

fn main() {
    let path = args().nth(1).unwrap();
    let file = File::open(path).unwrap();

    let mut count = 0;
    let mut prev1 = 0;
    let mut prev2 = 0;
    let mut prev3 = 0;

    for line in BufReader::new(file).lines() {
        let i = line.unwrap().parse::<i32>().unwrap();
        if i > prev3 {
            count += 1;
        }
        prev3 = prev2;
        prev2 = prev1;
        prev1 = i;
    }
    print!("{}\n", count - 3);
}