#include using namespace std; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int n, k; cin >> n >> k; if (2 * k == n) { cout << "Yes\n"; for (int i = 0; i < k; ++i) { cout << i + 1 << ' ' << n - i << '\n'; } return 0; } if (k == 1) { for (int i = 0; i < n; ++i) { cout << i + 1 << " \n"[i == n - 1]; } return 0; } cout << "No\n"; }