#include <fstream>
#include <cstdio>
#define pmax 2000005
using namespace std;
ifstream f("multiplu.in");
ofstream g("multiplu.out");
int c[pmax];
int r[pmax];
int cnt[pmax];
int n,a,b,mod1,mod2,t;
int sol[100],nr,p,u;

int main()
{   int i,j;
    f>>a>>b;
    n=a*b;
    p=1;u=1;
    c[1]=1;
    cnt[1]=1;

while (p<=u){
    mod1=(c[p]*10)%n;
    mod2=(c[p]*10+1)%n;
    if (cnt[mod1]==0) {c[++u]=mod1;
                       cnt[mod1]=u;
                       r[u]=p*10;}
    if (cnt[mod2]==0) {c[++u]=mod2;
                       cnt[mod2]=u;
                       r[u]=p*10+1;}
    p++;
    }
t=cnt[0];
while (t>=2)
        {sol[++nr]=r[t]%10;
         t=r[t]/10;
         }
sol[++nr]=1;
for (i=nr;i>=1;i--) g<<sol[i];
return 0;
}