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

const INF: usize = 1_000_000_000_000_000_100;

#[fastout]
#[allow(non_snake_case)]
fn main() {
    input! {
        (mut N, mut K): (usize, usize),
    }
    N = min(N, 162);
    K += 1;
    let mut DP = vec![vec![vec![0; N+1]; 10]];
    DP[0][0][0] = 1;
    for i in 0..100_000 {
        let mut DP2 = vec![vec![0; N+1]; 10];
        for j in 0..=9 {
            for k in 0..=N {
                for l in 0..=9 {
                    if k + l <= N {
                        DP2[l][k+l] = min(DP[i][j][k] + DP2[l][k+l], INF);
                    }
                }
            }
        }
        let mut sum = 0;
        for j in 0..=9 {
            for k in 0..=N {
                sum += DP2[j][k];
            }
        }
        DP.push(DP2);
        if sum >= K {
            break;
        }
    }
    let M = DP.len();
    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 ans = Vec::new();
    for i in (1..M).rev() {
        for j in 0..=9 {
            if DP[i][j][N] < K {
                K -= DP[i][j][N];
            }
            else {
                ans.push(j);
                N -= j;
                break;
            }
        }
    }
    println!("{}", ans.iter().map(|&x| x.to_string()).collect::<Vec<String>>().join(""));
}