fn main(){
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).unwrap();
	let vec: Vec<&str> = s.trim().split(' ').collect();
	let d: i32 = vec[0].parse().unwrap();
	let p = vec[1].parse::<f64>().unwrap() / 100.0;
	println!("{}", ((d as f64 * p) + d as f64).floor());
}