#include<bits/stdc++.h>
using namespace std;
int dv,a,b,m,q[3000005],pre[3000005],st,dr,nr,rest1,rest2;
bool seen[3000005],v[3000005],cif[3000005];
int cmmmc(int a,int b)
{
    int x=a,y=b;
    int r=a%b;
    while(r)
    {
        a=b;b=r;
        r=a%b;
    }
    return (x*y/b);
}
void BuildSol(int dr)
{
    while(dr>=1)
    {
        v[++dv]=cif[dr];
        dr=pre[dr];
    }
}
void afisare()
{
    for(int i=dv;i>=1;i--) printf("%d",v[i]);
    printf("\n");
}
int main()
{
    freopen("multiplu.in","r",stdin);
    freopen("multiplu.out","w",stdout);
    scanf("%d%d",&a,&b);
    m=cmmmc(a,b);
    cif[1]=1;
    q[1]=1;
    seen[1]=1;
    st=1;
    dr=2;
    while(st<dr)
    {
        nr=q[st];
        rest1=(10*nr)%m;
        rest2=(10*nr+1)%m;
        if(!seen[rest1])
        {
            q[dr]=rest1;
            seen[rest1]=1;
            cif[dr]=0;
            pre[dr]=st;
            if(!q[dr])
            {
                BuildSol(dr);
                afisare();
                return 0;
            }
            dr++;
        }
        if(!seen[rest2])
        {
            q[dr]=rest2;
            seen[rest2]=1;
            cif[dr]=1;
            pre[dr]=st;
            if(!q[dr])
            {
                BuildSol(dr);
                afisare();
                return 0;
            }
            dr++;
        }
        seen[q[st]]=0;
        st++;
    }
    return 0;
}