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#include <bits/stdc++.h>
using namespace std;
ifstream ci("multiplu.in");
ofstream cou("multiplu.out");
long long a,b,c;
long long sol[20];
long long n=1;
long long veri=0;
bool vericif(long long a){
long long veri=1;
while(a){
if(a%10!=1&&a%10!=0){veri=0;}
a/=10;
}
return veri;
}
void rez(){
long long p,r=1;
while(1){
p=c*r++;
if( vericif(p) ){cou<<p;break;}
}
}
void cmmmc(){
long long d,i,r;
d=a;
i=b;
r=a%b;
while(r!=0){
d=i;
i=r;
r=d%i;
}
c=a*b/i;
}
int main()
{
ci>>a>>b;
cmmmc();
rez();
return 0;
}