题解 | #小红的好数#

import java.io.*;
import java.util.*;
import java.math.BigInteger;

public class Main {
    static boolean isGoodNumber(int x) {
        boolean[] f = new boolean[10];
        for(int i=0;i<5;i++) {
            if(f[x%10]) {
                return false;
            }
            f[x%10]=true;
            x/=10;
        }
        return true;
    }

    static void solve() {
        int k = in.nextInt();
        List<Integer> list = new ArrayList<>();
        for(int i=100000;i>=0;i--) {
            if(isGoodNumber(i)) {
                list.add(i);
            }
        }
        out.printf("%05d",list.get(k-1));
    }

    public static void main(String[] args) {
        solve();
        out.flush();
    }

    static FastReader in = new FastReader();
    static PrintWriter out = new PrintWriter(System.out);

    static class FastReader {
        static BufferedReader br;
        static StringTokenizer st;

        FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            String str = "";
            while(st==null||!st.hasMoreElements()) {
                try {
                    str = br.readLine();
                } catch(IOException e) {
                    throw new RuntimeException(e);
                }
                st = new StringTokenizer(str);
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }
    }
}