#include <fstream>

using namespace std;
ifstream cin ("multiplu.in");
ofstream cout ("multiplu.out");
const int NMAX=1000;
int v[]={ 1, 10, 11,
    100, 101, 110, 111,
    1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111,
    10000, 10001, 10010, 10011, 10100, 10101, 10110, 10111,
    11000, 11001, 11010, 11011, 11100, 11101, 11110, 11111,
    100000, 100001, 100010, 100011, 100100, 100101, 100110, 100111,
    101000, 101001, 101010, 101011, 101100, 101101, 101110, 101111,
    110000, 110001, 110010, 110011, 110100, 110101, 110110, 110111,
    111000, 111001, 111010, 111011, 111100, 111101, 111110, 111111,
    1000000, 1000001, 1000010, 1000011, 1000100, 1000101, 1000110, 1000111,
    1001000, 1001001, 1001010, 1001011, 1001100, 1001101, 1001110, 1001111,
    1010000, 1010001, 1010010, 1010011, 1010100, 1010101, 1010110, 1010111,
    1011000, 1011001, 1011010, 1011011, 1011100, 1011101, 1011110, 1011111,
    1100000, 1100001, 1100010, 1100011, 1100100, 1100101, 1100110, 1100111,
    1101000, 1101001, 1101010, 1101011, 1101100, 1101101, 1101110, 1101111,
    1110000, 1110001, 1110010, 1110011, 1110100, 1110101, 1110110, 1110111,
    1111000, 1111001, 1111010, 1111011, 1111100, 1111101, 1111110, 1111111};
int main()
{
    int i, a, b;
    cin>>a>>b;
    for (i=0;i<=126;i++)
    {
        if (v[i]%a==0 && v[i]%b==0)
        {
            cout<<v[i];
               return 0;
        }
    }
}