#include <iostream>

using namespace std;

int main () {
    int N, K; cin >> N >> K;

    if (N % K != 0) {
        cout << -1 << "\n";
        return 0;
    }

    if (N == 1) {
        if (K == 1) {
            cout << 1 << "\n";
        }
        else {
            cout << -1 << "\n";
        }

        return 0;
    }

    int rem = N;
    auto f = [&](int x) {
        cout << x;
        rem--;
        if (rem == 0) cout << "\n";
        else cout << " ";
    };

    for (int i = 0; i < N / K; i++) f(1);
    while (0 < rem) f(2);
}