#include <fstream>
#define inf 2100000000
using namespace std;
ifstream fin("multiplu.in");
ofstream fout("multiplu.out");
int a,b,n,u,p,q[2000001],sol;
int main()
{
    fin>>a>>b;
    u=p=1;
    q[p]=1;
    while(p<=u)
    {
        if(q[p]%a==0&&q[p]%b==0)
        {
            sol=p;
            p=inf;
        }
        else
        {
            q[++u]=q[p]*10;
            q[++u]=q[p]*10+1;
        }
        p++;
    }
    fout<<q[sol];
    return 0;
}