fn gcd(a: isize, b: isize) -> isize {
    if b == 0 { return a; }
    gcd(b, a%b)
}

fn lcm(a: isize, b: isize) -> isize {
    a / gcd(a, b) * b
}

fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut points = (0..n).map(|_| {
            let mut temp = String::new();
            std::io::stdin().read_line(&mut temp).ok();
            let temp: Vec<isize> = temp.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
            (temp[0], temp[1])
        })
        .collect::<Vec<_>>();

    points.sort();
    let mut result = 2;
    for i in 0..n {
        let (lx, ly) = points[i];
        for j in i+1..n {
            let (rx, ry) = points[j];
            let mut cnt = 2usize;
            for k in 0..n {
                if k == i || k == j { continue; }
                let (mx, my) = points[k];
                if lx == rx {
                    if mx == lx {
                        cnt += 1;
                    }
                } else if ly == ry {
                    if my == ly {
                        cnt += 1;
                    }
                } else {
                    if lx == mx || ly == my || mx == rx  || my == ry { continue; }
                    let (dx, dy) = (rx - lx, ry - ly);
                    let (dx2, dy2) = (mx - lx, my - ly);
                    let lcmval = lcm(dx, dx2);
                    if dy * lcmval / dx == dy2 * lcmval / dx2 {
                        cnt += 1;
                    }
                }
            }
            result = result.max(cnt);
        }
    }
    println!("{}", result);
}