#include <bits/stdc++.h>

using namespace std;

void Next(int arr[], int no){

    int cont = 0;
    for(int i = no - 1; i >=0; i--){
        if(arr[i] == 0){
            arr[i] = 1;
            break;
        } else {
            cont++;
            arr[i] = 0;
        }
    }

    arr[no - cont- 1] = 1;

}

unsigned long long int formNo(int arr[], int no){

    unsigned long long int nr = 0;

    for(int i = 0; i < no; i++){
        nr = nr*10 + arr[i];
    }

    return nr;

}

int main()
{
    ifstream in("multiplu.in");
    ofstream out("multiplu.out");

    int a, b;
    in>>a>>b;

    unsigned long long int nr = 0;
    bool found = false;

    int arr[8] = {0,0,0,0,0,0,0,0};

    while( !found ){

        Next(arr, 8);
        nr = formNo(arr, 8);

        if( nr >= max(a, b) ){
            if(nr%a == 0 && nr%b == 0){
                break;
            }
        }
    }

    out<<nr;

    return 0;
}