#include <iostream> using namespace std; int main(){ int n; int a[21][21]; cin>>n; for(int k=1;k<=n;k++){ for(int i=k;i<=n;i++) for(int j=k;j<=n;j++) a[i][j]=k; } for(int i=1;i<=n;i++){ for(int j=1;j<n;j++) cout<<a[i][j]<<" "; cout<<a[i][n]<<endl; } return 0; }