fn main() {
    proconio::input! {
        t: usize,
    }

    for _ in 0..t {
        proconio::input! {
            n: u64,
        }

        let mut f: u64 = 1;
        while f < n + 1 {
            f *= 10;
        }
        let m = f - (n + 1);

        // 2 + 7 | 27
        // 10 + 89 |  1089
        
        println!("{}", m);
    }
}