use proconio::input;
use proconio::fastout;
use std::cmp::min;

const INF: usize = 1_000_000_000_000_000_010;

#[fastout]
#[allow(non_snake_case)]
fn main() {
    input! {
        (mut N, mut K): (usize, usize),
    }
    N = min(200, N);
    let M;
    if N <= 5 {
        M = 100_000;
    }
    else if N <= 10 {
        M = 10_000;
    }
    else {
        M = 1_000;
    }
    K += 1;
    let mut DP = vec![vec![vec![0; N+1]; 10]; M+1];
    DP[0][0][0] = 1;
    for i in 0..M {
        for j in 0..=9 {
            for k in 0..=N {
                for l in 0..=9 {
                    if k + l <= N {
                        DP[i+1][l][k+l] = min(INF, DP[i+1][l][k+l] + DP[i][j][k]);
                    }
                }
            }
        }
    }
    for i in 0..=M {
        for j in 0..=9 {
            for k in 0..N {
                DP[i][j][k+1] = min(DP[i][j][k] + DP[i][j][k+1], INF);
            }
        }
    }
    let mut idx = N;
    let mut ans = Vec::new();
    for i in (1..=M).rev() {
        for j in 0..=9 {
            if DP[i][j][idx] < K {
                K -= DP[i][j][idx];
            }
            else {
                ans.push(j);
                idx -= j;
                break;
            }
        }
    }
    for i in 0..M {
        if ans[i] != 0 {
            println!("{}", ans[i..].iter().map(|&x| x.to_string()).collect::<Vec<String>>().join(""));
            break;
        }
    }
}