fn c() -> String { let mut s = String::new(); std::io::stdin().read_line(&mut s).unwrap(); s.trim().to_string() } fn main() { let f: Vec<i64> = c().split_whitespace().flat_map(str::parse).collect(); let o = || { println!("? 1 1"); c().parse::<i64>().unwrap() }; match f.as_slice() { [1, 1] => println!("! 1 1"), [1, _] => { let d = o(); println!("! 1 {}", d + 1); } [_, 1] => { let d = o(); println!("! {} 1", d + 1); } _ => { let u = o(); println!("? 1 {}", f[1]); let v = c().parse::<i64>().unwrap(); let d = (u - v - 1 + f[1].pow(2)) / 2; let y = (d / (f[1] - 1)).abs(); let x = (1..=f[0]) .find(|&x| (y - 1).pow(2) + (x - 1).pow(2) == u) .unwrap(); println!("! {x} {y}"); } } }