fn run() { let mut s = String::new(); std::io::stdin().read_line(&mut s).unwrap(); let mut it = s.trim().split_whitespace(); let a: i128 = it.next().unwrap().parse().unwrap(); let b: i128 = it.next().unwrap().parse().unwrap(); if b < 0 { println!("{}", a + b); } else { let mut m = 1; while m <= b { m *= 10; } let ans = m * a + b; println!("{}", ans); } } fn main() { run(); }