#include <bits/stdc++.h>
using namespace std;
const int INF = 1000000;
int main(){
  int N, K;
  cin >> N >> K;
  if (K == 1){
    cout << "No" << endl;
  } else if (K == 2){
    if (N % 2 == 0){
      cout << "Yes" << endl;
      for (int i = 0; i < N - 1; i++){
        int w;
        if (i % 2 == 0){
          w = INF;
        } else {
          w = -(INF + 1);
        }
        cout << i + 1 << ' ' << i + 2 << ' ' << w << endl;
      }
    } else {
      cout << "No" << endl;
    }
  } else if (K == N - 1){
    cout << "No" << endl;
  } else {
    cout << "Yes" << endl;
    for (int i = 0; i < N - 3; i++){
      cout << i + 1 << ' ' << i + 2 << ' ' << -2 << endl;
    }
    cout << N - 2 << ' ' << N - 1 << ' ' << K * 2 - 3 << endl;
    cout << N - 2 << ' ' << N << ' ' << K * 2 - 3 << endl;
  }
}