#include<iostream> using namespace std; int main(){ int n; cin>>n; int f=(2*n-1)/2,l=(2*n-1)/2; for(int i=1;i<=n;i++){ for(int j=0;j<2*n-1;j++){ if(j>=f&&j<=l) cout<<"*"; else cout<<" "; } f--; l++; cout<<endl; } return 0; }