#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; for (int i=0;i<n;i++){ for (int j=0;j<(n-i-1)*2;j++){ cout<<" "; } for (int j=0;j<i+1;j++){ cout<<j; } for (int j=i+1;j>0;j--){ cout<<j; } } for (int i=n;i>n;i--){ for (int j=0;j<(n-i-1)*2;j++){ cout<<" "; } for (int j=0;j<i+1;j++){ cout<<j; } for (int j=i+1;j>0;j--){ cout<<j; } } return 0; }