#include<iostream>
using anmespace 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 <= (2* i - 1); j++) {
            cout << "*";
        }
        cout <<endl;
    }
    return 0;
}