#include<iostream>
using namespace std;
int main(){
    int n:
    cin>>n;
    if(n<0){
        cout"Invalid input";
        return 0;
    }
    for (int i=1; i<n ;i++){
        for (int j=1; j<=n-i;j++){
            cout<<" ";
        }
        for int(k=1;k<=(2*i-1);k++){
            cout<<"*";
        }
        cout<<endl;
    }
    return 0;
    
}