// Datorez puntajul de la aceasta problema lui Bogdan Pop care mi-a spus solutia
// incercand sa-mi explice alta problema de fapt
#include <bits/stdc++.h>
#define DEBUG(x) cerr << (#x) << ": " << (x) << '\n'

using namespace std;

int main() {
  freopen("multiplu.in", "r", stdin);
  freopen("multiplu.out", "w", stdout);
  ios::sync_with_stdio(0);
  cin.tie(0);

  int a, b;
  cin >> a >> b;
  int lcm = a * b / __gcd(a, b);
  int *digit = new int [lcm];
  int *dad = new int[lcm];
  int *q = new int[lcm];
  iota(dad, dad + lcm, 0);
  int f = 0; b = 0;
  q[f] = 1;
  dad[1] = 0;
  digit[1] = 1;
  while (f <= b) {
    int node = q[f++];
    if (node == 0) {
      break;
    }
    for (int dig : {0, 1}) {
      int to = (node * 10 + dig) % lcm;
      if (dad[to] == to) {
        q[++b] = to;
        dad[to] = node;
        digit[to] = dig;
        if (to == 0) {
          break;
        }
      }
    }
  }
  
  int node = 0;
  string ans;
  do {
    ans += digit[node] + '0';
    node = dad[node];
  } while (node);

  reverse(ans.begin(), ans.end());
  cout << ans << endl;

#ifdef LOCAL_DEFINE
  cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
  return 0;
}