import java.util.Scanner;


public class Main_yukicoder294_1 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int[][][] dp = new int[2][3][26];
        dp[1][2][1] = 1;
        int[] d = {3, 5};
        for (int i = 1; i < 25; i++) {
        	for (int j = 0; j < 2; j++) {
        		for (int k = 0; k < 3; k++) {
        			for (int l = 0; l < 2; l++) {
        				dp[l][(k + d[l]) % 3][i + 1] += dp[j][k][i];
        			}
        		}
        	}
        }

        int i = 0;
        int j = 0;
        int sum = 0;
        out:
        for (i = 1; i < 26; i++) {
        	for (j = 0; j < 2; j++) {
        		if (n - dp[j][sum][i] <= 0) {
        			break out;
        		}
        		n -= dp[j][sum][i];
        	}
        }

        String ret = Integer.toString(d[j]);
        for (i--; i > 0; i--) {
        	for (int k = 0; k < 2; k++) {
        		if (n - dp[k][(sum + 6 - d[j]) % 3][i] <= 0) {
        			sum -= d[j];
        			sum += 6;
        			j = k;
        			ret += d[k];
        			break;
        		} else {
        			n -= dp[k][(sum + 6 - d[j]) % 3][i];
        		}
        	}
        }

        System.out.println(ret);

        sc.close();
    }
}