use std::collections::HashMap;
#[allow(unused_imports)]
use std::io::Write;

// {{{1
#[allow(unused)]
macro_rules! debug {
    ($($format:tt)*) => (write!(std::io::stderr(), $($format)*).unwrap());
}
#[allow(unused)]
macro_rules! debugln {
    ($($format:tt)*) => (writeln!(std::io::stderr(), $($format)*).unwrap());
}

macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let mut s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};

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

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };

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

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

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

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

fn main() {
    input! {
        x: usize,
    }

    let mut v = vec![];
    for i in 0..=x {
        v.push(i);
    }

    for i in 1..=x {
        let mut m = i;
        while m <= x {
            v[m] -= 1;
            m += i;
        }
    }
    // eprintln!("{:?}", v);

    let mut min = std::isize::MAX;
    let mut ans = vec![];
    for i in 1..x {
        let a = i;
        let b = x - i;
        let tmp = (v[a] as isize - v[b] as isize).abs();
        if tmp == min {
            ans.push((a, b));
        } else if tmp < min {
            ans = vec![(a, b)];
            min = tmp;
        }
    }

    for (a, b) in ans {
        println!("{} {}", a, b);
    }
}