#include <iostream>
#include <string>
using namespace std;

int main(){
	int n;
	cin >> n;
	string s = "a";
	
	int t = n - 1;
	for(int i = 2; i * i <= n; ++i){
		s += "ba";
		t = n - i * i;
	}
	for(int i = 0; i < t; ++i){
		s += "sugim"[i % 5];
	}
	
	cout << s << '\n';
}