use std::io::Read;

fn main() {
	let mut s = String::new();
	std::io::stdin().read_to_string(&mut s).ok();
	let v: Vec<_> = s
		.lines()
		.skip(1)
		.enumerate()
		.map(|(i, s)| {
			let x: Vec<i64> = s.split(' ').flat_map(str::parse).collect();
			(i, x[0], x[1])
		})
		.collect();
	let mut a = 2;
	for (i, x, y) in v.iter() {
		for (j, p, q) in v.iter() {
			if i == j {
				continue;
			}
			let mut c = 0;
			for (_, b, d) in v.iter() {
				if (p - x) * (d - y) == (q - y) * (b - x) {
					c += 1;
				}
			}
			a = a.max(c);
		}
	}
	println!("{a}")
}