#include <iostream>
#include <fstream>
#include <queue>
using namespace std;

int a,b;
queue<long long> c;

int main()
{
    ifstream f("multiplu.in");
    ofstream g("multiplu.out");
    f>>a>>b;
    for(c.push(1);c.size(); c.pop()) {
        int fr=c.front();
        if(0==fr%a && 0==fr%b) {
            g<<fr;
            return 0;
        }
        c.push(fr*10LL);
        c.push(fr*10LL+1LL);
    }
    return 0;
}