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#include <iostream>
#include <fstream>
#include <bitset>
using namespace std;
ifstream fin("multiplu.in");
ofstream fout("multiplu.out");
int N = 20;
int main(){
int a, b;
fin >> a >> b;
int mini = 1000000000;
for(int mask = 1; mask < (1 << N); mask++){
int m = 1;
for(int bit = 0; (1 << bit) <= mask; bit++){
m *= 10;
if((mask & (1 << bit)) == (1 << bit)) m++;
}
m /= 10;
if(m % a == 0 && m % b == 0) mini = min(mini, m);
}
fout << mini;
return 0;
}