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

int main() {
	int b;
	cin.ignore(9, ' ');
	cin >> b;
	int phi = b;
	for(int x = b, p = 2; p <= x; ++ p) if(x % p == 0) {
		phi -= phi / p;
		while(x % p == 0) x /= p;
	}
	string S(phi + 19, 'a'), T = S;
	++ T[0], ++ S[phi];
	cout << S << '\n' << T << endl;
 	return 0;
}