#include <iostream>
#include <vector>
#include <algorithm>
#include <math.h>
#include <string>
#include <set>
#include <cstdio>
#include <iomanip>
#include <map>

using namespace std;



int n, k;
vector <int> ans;
void gen_zero(int ind, int zero, int ones) {
    if (ind == n) {
        for (auto x : ans) cout << x;
        cout << endl;
        return;
    }
    if (zero + 1 + k <= n) {
        ans[ind] = 0;
        gen_zero(ind + 1, zero + 1, ones);
    }
    if (ones < k) {
        ans[ind] = 1;
        gen_zero(ind + 1, zero, ones + 1);
    }

}
int main()
{
    cin >> n >> k;
    ans.resize(n);
    gen_zero(0, 0, 0);
    return 0;
}