#![allow(dead_code, unused_variables, unused_macros)]

fn main() {
    input!(n:usize, xy:[(i32,i32);n]);

    let mut ans = 2;
    for i in 0..n - 1 {
        for j in i..n {
            let lx = (xy[i].0 - xy[j].0).abs();
            let ly = (xy[i].1 - xy[j].1).abs();
            let mut count = 0;
            for &(x, y) in &xy {
                count += match (lx, ly) {
                    (0, _) => x == 0,
                    (_, 0) => y == 0,
                    _ => {
                        let a = ly / lx;
                        let b = xy[i].1 - a * xy[i].0;
                        y == a * x + b
                    }
                } as usize;
            }
            ans = ans.max(count);
        }
    }
    println!("{ans}");
}

mod xxx {
    // https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
    #[macro_export]
    macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        input_inner!{$s, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}
    #[macro_export]
    macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};

    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

    #[macro_export]
    macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };

    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };

    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };

    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };

    ($next:expr, bits)=>{
        u64::from_str_radix(&$next(), 2).expect("Parse error")
    };

    ($next:expr, hexs)=>{
        u64::from_str_radix(&$next(), 16).expect("Parse error")
    };


    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}
}