#include <fstream>
#define int long long
using namespace std;
ifstream in("multiplu.in");
ofstream out("multiplu.out");
int n, mask, j, a, b, x, p;
const int pre = 10000000;
int32_t main()
{
    in >> a >> b;
    for (mask = 1; mask < (1<<8); mask++)
    {
        x=0;
        p = pre;
        for (j = 7; j >= 0; j--)
        {
            if (mask & (1<<j))
                x += 1 * p;
            p/=10;
        }
        if (!(x % a) && !(x%b))
        {
            out << x;
            return 0;
        }
    }
    return 0;
}