use std::io::*;
use std::str::*;
fn main() {
    println!("{} {}",0,0);
    let mut x:i32 = read();
   if x == 0{return;}else{
    println!("{} {}",0,x);
    let mut y:i32 = read();
  if y == 0{return;}else{
    println!("{} {}",y/2,x-y/2);
}
}
}

fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin = stdin.lock();
    let s = stdin.bytes().map(|c| c.unwrap() as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect::<String>();
    s.parse::<T>().unwrap_or_else(|_| panic!("Faild to parse {}", s))
}