use std::io::*;
use std::cmp::*;
use std::str::FromStr;
#[allow(unused_imports)]
fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin = stdin.lock();
    let token: String = stdin
        .bytes()
        .map(|c| c.expect("failed to read char") as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect();
    token.parse().ok().expect("failed to parse token")
}
fn primes(n:usize) -> usize{
    let mut cnt:usize = 0;
    let root:usize =((n as f64).sqrt()) as usize;
    for i in 1..root + 1{
        match n % i {
            0 => cnt += 1,
            _ => cnt += 0,
        }
        if n / i != i && n % i == 0{
            cnt += 1
        }
    }
    cnt
}
fn main(){
    let x:usize = read();
    let mut rec = vec![0;x + 1];
    for i in 1..x {
        rec[i] = primes(i);
    }
    let mut ans:Vec<Vec<(usize,usize)>> = vec![vec![(0,0);0];x + 1];
    let mut mini = 100000000000000000;
    for i in 1..x{
        let fn_s:i64 = (i as i64 - rec[i] as i64) as i64;
        let fn_b:i64 = ((x - i) as i64 - rec[x - i] as i64) as i64;
        let tmp = (fn_s - fn_b).abs() as usize;
        mini = min(mini,tmp);
        ans[tmp].push((i,x - i));
    }
    for i in &ans[mini] {
        println!("{} {}", i.0,i.1);
    }
}