#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++){
        int stars = 2*i-1;
        for(int j =0;j<stars;j++){
            cout<<"*"<<\t;
        }
        if(i<N)
        cout<<endl;
    }
    return 0;
}