use proconio::input_interactive;

fn main() {
	println!("? -1000");
	input_interactive!(u: i64);
	println!("? 1000");
	input_interactive!(v: i64);
	for i in 0..98 {
		println!("? {}", i * 10);
		input_interactive!(_: i64);
	}
	println!("! {} {}", (v - (u + v) / 2) / 1000, (u + v) / 2);
}