#include <iostream>

using namespace std;

void fail() {
    cout << "No\n";
    exit(0);
}

void solve() {
    int n, k;
    cin >> n >> k;

    if (k == 1 || k == n - 1) fail();

    if (k == 2) {
        if (n % 2 != 0) fail();

        cout << "Yes\n";
        for (int v = 1; v < n; ++v) {
            cout << v << " " << v + 1 << " "
                 << (v % 2 ? n : -(n + 1)) << "\n";
        }
    } else {
        // k >= 3
        cout << "Yes\n";
        for (int v = 1; v < k; ++v) {
            cout << v << " " << v + 1 << " "
                 << (v == 1 ? -3 : 0) << "\n";
        }

        for (int v = k + 1; v <= n; ++v) {
            cout << k << " " << v << " " << 2 << "\n";
        }
    }
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    solve();

    return 0;
}