Robbers, who attacked the Gerda's cab, are very successful in covering from the kingdom police. To make the goal of catching them even harder, they use their own watches.

First, as they know that kingdom police is bad at math, robbers use the positional numeral system with base 7. Second, they divide one day in n hours, and each hour in m minutes. Personal watches of each robber are divided in two parts: first of them has the smallest possible number of places that is necessary to display any integer from 0 to n - 1, while the second has the smallest possible number of places that is necessary to display any integer from 0 to m - 1. Finally, if some value of hours or minutes can be displayed using less number of places in base 7 than this watches have, the required number of zeroes is added at the beginning of notation.

Note that to display number 0 section of the watches is required to have at least one place.

Little robber wants to know the number of moments of time (particular values of hours and minutes), such that all digits displayed on the watches are distinct. Help her calculate this number.

Input

The first line of the input contains two integers, given in the decimal notation, n and m (1 ≤ n, m ≤ 109) — the number of hours in one day and the number of minutes in one hour, respectively.

Output

Print one integer in decimal notation — the number of different pairs of hour and minute, such that all digits displayed on the watches are distinct.

Examples

Input

2 3


Output

4


Input

8 2


Output

5

Note

In the first sample, possible pairs are: (0: 1), (0: 2), (1: 0), (1: 2).

In the second sample, possible pairs are: (02: 1), (03: 1), (04: 1), (05: 1), (06: 1).
/*
 * Remember a 6.0 student can know more than a 10.0 student.
 * Grades don't determine intelligence, they test obedience. 
 * I Never Give Up.
 * I will become Candidate Master.
 * I will defeat Saurabh Anand.
 * Skills are Cheap,Passion is Priceless.
 */
import java.util.*;
import java.util.Map.Entry;
import java.io.*;
import java.text.*;

import static java.lang.System.out;
import static java.util.Arrays.*;
import static java.lang.Math.*;
public class ContestMain {
	private static Reader in=new Reader();
	private static StringBuilder ans=new StringBuilder();
	private static long MOD=1000000000+7;//10^9+7
	private static final int N=100000+7; //10^5+7
	private static final double EPS=1e-9;
//	private static final int LIM=26;
//	private static final double PI=3.1415;
	private static ArrayList<Integer> v[]=new ArrayList[N];
//	private static int color[]=new int[N];
	private static boolean mark[]=new boolean[N];
//	private static BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
//	private static ArrayList<Pair> v[]=new ArrayList[N];
	private static long powmod(long x,long n){
		if(n==0||x==0)return 1;
		else if(n%2==0)return(powmod((x*x)%MOD,n/2));
		else return (x*(powmod((x*x)%MOD,(n-1)/2)))%MOD;
	}
//	private static void shuffle(long [] arr) {
//		for (int i = arr.length - 1; i >= 2; i--) {
//			int x = new Random().nextInt(i - 1);
//	        long temp = arr[x];
//	        arr[x] = arr[i];
//	        arr[i] = temp;
//	    }
//	 }
//	private static long gcd(long a, long b){
//		if(b==0)return a;
//		return gcd(b,a%b);
//	}
//	private static boolean check(int x,int y){
//		if((x>=0&&x<n)&&(y>=0&&y<m)&&mat[x][y]!='X'&&!visited[x][y])return true;
//		return false;
//	}
//	static class Node{
//		int left;
//		int right;
//		Node(){
//			left=0;
//			right=0;
//		}
//	}
	static int time_hour[],time_min[],hr,min;
	static long n,m,cnt=0;
	public static void solve_hour(ArrayList<Integer> ar){
		if(ar.size()==hr){
			solve_min(ar);
			return;
		}
		for(int i=0;i<7;i++){
			if(!ar.contains(i)){
				ar.add(i);
				solve_hour(ar);
				ar.remove(ar.size()-1);
			}
		}
	}
	public static void solve_min(ArrayList<Integer> ar){
		if(ar.size()==hr+min){
			if((hr==0&&ar.contains(0))||(min==0&&ar.contains(0)))return;
			long val_hr=0,val_min=0,c=0;
			for(int i=hr-1;i>=0;i--){
				val_hr+=ar.get(i)*pow(7,c++);
			}
			c=0;
			for(int i=ar.size()-1;i>=hr;i--){
				val_min+=ar.get(i)*pow(7,c++);
			}
//			out.println(val_hr+" "+val_min+" "+ar.toString());
			if(val_hr<n&&val_min<m){
				cnt++;
			}
			return;
		}
		for(int i=0;i<7;i++){
			if(!ar.contains(i)){
				ar.add(i);
				solve_min(ar);
				ar.remove(ar.size()-1);
			}
		}
	}
	public static void main(String[] args) throws IOException{
		n=in.nextLong();
		m=in.nextLong();
		hr=(int) ceil((double)log(n)/log(7));
		min=(int) ceil((double)log(m)/log(7));
		if(hr+min>7||(hr+min==0)){out.println(0);return;}
		time_hour=new int[hr];
		time_min=new int[min];
		solve_hour(new ArrayList());
		out.println(cnt);
	}
	static class Pair<T> implements Comparable<Pair>{
		int l;
		int r;
		Pair(){
			l=0;
			r=0;
		}
		Pair(int k,int v){
			l=k;
			r=v;
		}
		@Override
		public int compareTo(Pair o) {
			if(o.l!=l)return (int) (l-o.l);
			else return (int)(r-o.r);
		}
		
	}
	static class Reader{
        BufferedReader br;
        StringTokenizer st;
        public Reader()
        {
            br = new BufferedReader(new
                     InputStreamReader(System.in));
        }
 
        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
     
                	st = new StringTokenizer(br.readLine());
                }
                catch (IOException  e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
 
        int nextInt()
        {
            return Integer.parseInt(next());
        }
 
        long nextLong()
        {
            return Long.parseLong(next());
        }
 
        double nextDouble()
        {
            return Double.parseDouble(next());
        }
 
        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
}