#include<iostream>
using namespace std;

#define NMAX 1000000001

bool valid(int N)
{
	while(N > 0)
	{
		if(N % 10 > 1)
			return false;
		N /= 10;
	}
	return true;
}

int main()
{
	int numere[1000] = {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, 10000000, 10000001, 10000010, 10000011, 10000100, 10000101, 10000110, 10000111, 10001000, 10001001, 10001010, 10001011, 10001100, 10001101, 10001110, 10001111, 10010000, 10010001, 10010010, 10010011, 10010100, 10010101, 10010110, 10010111, 10011000, 10011001, 10011010, 10011011, 10011100, 10011101, 10011110, 10011111, 10100000, 10100001, 10100010, 10100011, 10100100, 10100101, 10100110, 10100111, 10101000, 10101001, 10101010, 10101011, 10101100, 10101101, 10101110, 10101111, 10110000, 10110001, 10110010, 10110011, 10110100, 10110101, 10110110, 10110111, 10111000, 10111001, 10111010, 10111011, 10111100, 10111101, 10111110, 10111111, 11000000, 11000001, 11000010, 11000011, 11000100, 11000101, 11000110, 11000111, 11001000, 11001001, 11001010, 11001011, 11001100, 11001101, 11001110, 11001111, 11010000, 11010001, 11010010, 11010011, 11010100, 11010101, 11010110, 11010111, 11011000, 11011001, 11011010, 11011011, 11011100, 11011101, 11011110, 11011111, 11100000, 11100001, 11100010, 11100011, 11100100, 11100101, 11100110, 11100111, 11101000, 11101001, 11101010, 11101011, 11101100, 11101101, 11101110, 11101111, 11110000, 11110001, 11110010, 11110011, 11110100, 11110101, 11110110, 11110111, 11111000, 11111001, 11111010, 11111011, 11111100, 11111101, 11111110, 11111111, 100000000, 100000001, 100000010, 100000011, 100000100, 100000101, 100000110, 100000111, 100001000, 100001001, 100001010, 100001011, 100001100, 100001101, 100001110, 100001111, 100010000, 100010001, 100010010, 100010011, 100010100, 100010101, 100010110, 100010111, 100011000, 100011001, 100011010, 100011011, 100011100, 100011101, 100011110, 100011111, 100100000, 100100001, 100100010, 100100011, 100100100, 100100101, 100100110, 100100111, 100101000, 100101001, 100101010, 100101011, 100101100, 100101101, 100101110, 100101111, 100110000, 100110001, 100110010, 100110011, 100110100, 100110101, 100110110, 100110111, 100111000, 100111001, 100111010, 100111011, 100111100, 100111101, 100111110, 100111111, 101000000, 101000001, 101000010, 101000011, 101000100, 101000101, 101000110, 101000111, 101001000, 101001001, 101001010, 101001011, 101001100, 101001101, 101001110, 101001111, 101010000, 101010001, 101010010, 101010011, 101010100, 101010101, 101010110, 101010111, 101011000, 101011001, 101011010, 101011011, 101011100, 101011101, 101011110, 101011111, 101100000, 101100001, 101100010, 101100011, 101100100, 101100101, 101100110, 101100111, 101101000, 101101001, 101101010, 101101011, 101101100, 101101101, 101101110, 101101111, 101110000, 101110001, 101110010, 101110011, 101110100, 101110101, 101110110, 101110111, 101111000, 101111001, 101111010, 101111011, 101111100, 101111101, 101111110, 101111111, 110000000, 110000001, 110000010, 110000011, 110000100, 110000101, 110000110, 110000111, 110001000, 110001001, 110001010, 110001011, 110001100, 110001101, 110001110, 110001111, 110010000, 110010001, 110010010, 110010011, 110010100, 110010101, 110010110, 110010111, 110011000, 110011001, 110011010, 110011011, 110011100, 110011101, 110011110, 110011111, 110100000, 110100001, 110100010, 110100011, 110100100, 110100101, 110100110, 110100111, 110101000, 110101001, 110101010, 110101011, 110101100, 110101101, 110101110, 110101111, 110110000, 110110001, 110110010, 110110011, 110110100, 110110101, 110110110, 110110111, 110111000, 110111001, 110111010, 110111011, 110111100, 110111101, 110111110, 110111111, 111000000, 111000001, 111000010, 111000011, 111000100, 111000101, 111000110, 111000111, 111001000, 111001001, 111001010, 111001011, 111001100, 111001101, 111001110, 111001111, 111010000, 111010001, 111010010, 111010011, 111010100, 111010101, 111010110, 111010111, 111011000, 111011001, 111011010, 111011011, 111011100, 111011101, 111011110, 111011111, 111100000, 111100001, 111100010, 111100011, 111100100, 111100101, 111100110, 111100111, 111101000, 111101001, 111101010, 111101011, 111101100, 111101101, 111101110, 111101111, 111110000, 111110001, 111110010, 111110011, 111110100, 111110101, 111110110, 111110111, 111111000, 111111001, 111111010, 111111011, 111111100, 111111101, 111111110, 111111111, 1000000000};
	freopen("multiplu.in", "r", stdin);
	freopen("multiplu.out", "w", stdout);

	int primul_nr, al_doilea_nr;

	cin >> primul_nr >> al_doilea_nr;
	int nr = 0;
	for(int i = 0; i < 513; ++i)
	{
		if(numere[i] % primul_nr == 0 && numere[i] % al_doilea_nr == 0)
		{
			cout << numere[i] << endl;
			break;
		}
	}

	return 0;
}