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

int main(){
  int n;
  cin>>n;
  vector<tuple<int,int,int>> edge;
  for (int i=0;i<n-1;i++) edge.push_back({i+1,i+2,i*2+1});
  for (int i=0;i<n-2;i++) edge.push_back({2,i+3,i*2+4});
  int m=edge.size();
  assert(m==2*n-3);
  cout<<m<<endl;
  for (auto [u,v,c]:edge) cout<<u<<" "<<v<<" "<<c<<endl;
  auto f=[&](int s,int t){
    vector<int> ans;
    if (s==0) for (int i=0;i<t;i++) ans.push_back(i);
    else{
      for (int i=s-1;i>=1;i--) ans.push_back(i);
      ans.push_back(n-2+s);
      for (int i=s+1;i<t;i++) ans.push_back(i);
    }
    int k=ans.size();
    cout<<k<<" ";
    int sum=0;
    for (int i=0;i<k;i++) cout<<ans[i]+1<<" \n"[i==k-1];
  };
  for (int i=0;i<n;i++) for (int j=i+1;j<n;j++) f(i,j);
}