#![allow(unused_imports)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;
use std::ops::Bound::*;

#[allow(unused_macros)]
macro_rules! debug {
    ($($e:expr),*) => {
        #[cfg(debug_assertions)]
        $({
            let (e, mut err) = (stringify!($e), std::io::stderr());
            writeln!(err, "{} = {:?}", e, $e).unwrap()
        })*
    };
}

fn main() {
    let n = read::<usize>();
    let mut points = vec![];
    for i in 0..n {
        let v = read_vec::<i64>();
        let (x, y) = (v[0], v[1]);
        points.push((x, y));
    }
    let mut ans = 2;
    for i in 0..n {
        let (ix, iy) = points[i];
        for j in i + 1..n {
            let (jx, jy) = points[j];
            let mut temp = 0;
            for k in 0..n {
                let (kx, ky) = points[k];
                if (jx - ix) * (ky - iy) == (jy - iy) * (kx - ix) {
                    temp += 1;
                }
            }
            ans = max(ans, temp);
        }
    }
    println!("{}", ans);
}

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

fn gcd(a: i64, b: i64) -> i64 {
    if b == 0 {
        return a;
    }
    gcd(b, a % b)
}