#include <iostream>#define N 15using namespace std;int a[N][N];void yanghui(int n){    int i,j;    for(i=0;i<n;i++)   a[i][0]=a[i][i]=1;    for(i=2;i<n;i++)     for(j=1;j<i;j++) a[i][j]=a[i-1][j-1]+a[i-1][j];}int main(){  int i,j,n;  cin>>n;  yanghui(n);    for(i=0;i<n;i++)  {      for(j=0;j<=i;j++)      cout<<a[i][j]<<" ";       cout<<"\n";  }        return 0;}