use std::io::Read;

fn main() {
	let mut s = String::new();
	std::io::stdin().read_to_string(&mut s).ok();
	let c: Vec<u32> = s.split_whitespace().flat_map(str::parse).collect();
	c[1..]
		.chunks(2)
		.for_each(|x| println!("{}", (x[0] + 1) * x[1]))
}