#include<bits/stdc++.h> using namespace std; int a[30][31]; int main(){ a[0][1]=1; int n; cin>>n; cout<<a[0][1]<<endl; for(int i=1;i<n;i++){ for(int j=1;j<=i;j++){ a[i][j]=a[i-1][j-1]+a[i-1][j]; cout<<a[i][j]<<" "; } cout<<endl; } }