#include <iostream>
using namespace std;
 main() {
	int n ; 
	cin >> n; 
	
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= i; j++) { 
			cout <<  "o" ; 
     	}
     	for (int k = 1; k <=0; k++) { 
     		cout << "o"; 
     	}	
	    cout << "\n"; 
	}
}

/*
 
    o
   ooo
  ooooo
 ooooooo
ooooooooo
 */