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

int a,b,m;
queue<string> c;

int cmmdc(int a, int b) {
    int c;
    for(;b;) {
        c=a%b;
        a=b;
        b=c;
    }
    return a;
}

int mod(string s, int a) {
    int r=0;
    for(int i=0; i<s.size(); ++i) {
        r=r*10+s[i]-'0';
        r=r%a;
    }
    return r;
}

int main()
{
    ifstream f("multiplu.in");
    ofstream g("multiplu.out");
    f>>a>>b;
    m=(a*b)/cmmdc(a,b);
    for(c.push("1");c.size(); c.pop()) {
        string fr=c.front();
        if(mod(fr,m)==0) {
            g<<fr;
            return 0;
        }
        c.push(fr+"0");
        c.push(fr+"1");
    }
    return 0;
}