#include<cstdio>
char ucif[2000001];
int anterior[2000001];
int q[2000001];
void refacere(int x)
{
    if(x!=-1)
        refacere(anterior[x]);
    printf("%d",ucif[x]);
}
void qwer()
{
    printf("0");
}
int main()
{
    int a,b,ca,cb,m,r,x,y,i,p,u;
    freopen("multiplu.in","r",stdin);
    freopen("multiplu.out","w",stdout);
    scanf("%d%d",&a,&b);
    ca=a;
    cb=b;
    while(b!=0)
    {
        r=a%b;
        a=b;
        b=r;
    }
    m=(ca*cb)/a;
//qwer();
    for(i=0; i<=m; i++)
    {
        ucif[i]=anterior[i]=-1;
    }
    p=u=0;
    q[u++]=1;
    ucif[1]=1;
    anterior[1]=0;
    while(p!=u)
    {
        x=q[p++];
        for(i=0; i<=1; i++)
        {
            y=(x*10+i)%m;
            if(ucif[y]==-1)
            {
                q[u++]=y;
                ucif[y]=i;
                anterior[y]=x;
            }
        }
    }
    refacere(0);
    printf("\n");
    return 0;
}