using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var s = ReadLine();
        var n = int.Parse(s);
        var len = s.Length;
        var ans = 0;
        if (len == 2)
        {
            for (var i = 12; i <= n; i += 3) ++ans;
        }
        else
        {
            ans += 30;
            for (var i = 3; i < len; ++i) ans += 3 * (int)Math.Pow(4, i - 1);
            var dp = new int[len][];
            for (var i = 0; i < len; ++i) dp[i] = new int[5];
            if (s[0] > '3') dp[0][1] = 1;
            if (s[0] > '6') dp[0][2] = 1;
            if (s[0] == '3' || s[0] == '6' || s[0] == '9') dp[0][4] = 1;
            for (var i = 1; i < len; ++i)
            {
                dp[i][0] = dp[i - 1][0] + dp[i - 1][1] + dp[i - 1][2] + dp[i - 1][3];
                dp[i][1] = dp[i][0];
                dp[i][2] = dp[i][0];
                dp[i][3] = dp[i][0];
                if (s[i] > '0') dp[i][0] += dp[i - 1][4];
                if (s[i] > '3') dp[i][1] += dp[i - 1][4];
                if (s[i] > '6') dp[i][2] += dp[i - 1][4];
                if (s[i] == '0' || s[i] == '3' || s[i] == '6' || s[i] == '9') dp[i][4] = dp[i - 1][4];
            }
            ans += dp[^1].Sum();
        }
        WriteLine(ans);
    }
}