#include<bits/stdc++.h>
using namespace std;
ifstream fin("multiplu.in");
ofstream fout("multiplu.out");
int main()
{
    int a,b;
    fin>>a>>b;
    queue<long long>q;
    q.push(1);
    while(!q.empty())
    {
        long long nod=q.front();
        q.pop();
        if(nod%a==0&&nod%b==0)
        {
            fout<<nod;
            return 0;
        }
        q.push((long long)(nod*10));
        q.push((long long)(nod*10+1));
    }

}