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