#include <bits/stdc++.h>
using namespace std;

int main() {
    int N,K;
    cin >> N >> K;
    if(K == 1) {
        cout << "No" << endl;
    }
    else if(K == 2) {
        if(N%2 == 1) {
            cout << "No" << endl;
        }
        else {
            cout << "Yes" << endl;
            for(int i = 0; i < N-1; i++) {
                cout << i+1 << " " << i+2 << " " << ((i%2 == 0)?2000:-2001) << endl;
            }
        }
    }
    else {
        if(K == N-1) {
            cout << "No" << endl;
        }
        else if(K == 3 && N == 5) {
            cout << "Yes" << endl;
            cout << 1 << " " << 2 << " " << -2 << endl;
            cout << 2 << " " << 3 << " " << -2 << endl;
            cout << 3 << " " << 4 << " " << 3 << endl;
            cout << 3 << " " << 5 << " " << 3 << endl;
        }
        else {
            cout << "Yes" << endl;
            for(int i = 0; i < N-1; i++) {
                if(i < K-1) {
                    cout << i+1 << " " << i+2 << " " << -1 << endl;
                }
                else {
                    cout << K << " " << i+2 << " " << K-2 << endl;
                }
            }
        }
    }
}