#include <iostream> using namespace std; int main(){ int n; cin>>n; for( int j=1;j<=n;j++) { for(int t=1;t<=n-j;t++) cout<<" "; for(int t=1;t<=2*j-1;t++) cout<<"*"; cout<<endl; } for( int j=1;j<n;j++) { for(int t=1;t<=j;t++) cout<<" "; for(int t=1;t<=-2*j + 2*n-1;t++) cout<<"*"; // y = ax + b (1,5) - (2,3) cout<<endl; } return 0; }