#include <iostream>
#include <string>
#include "assert.h"
#include <fstream>
#include <vector>

using namespace std;

int main(){
	int a,b;
	cin >> a >> b;
	a %= b;

	vector<int> v(b+1, -1);

	int i = 0;
	long long c = 1;

	while(true){

		if(v[c] < 0) v[c] = i;
		else break;

		c = (c*a)%b;
		i++;
	}

	int len = i+1;
	string s(len, 'a');
	string t(len, 'a');

	s[len-1-v[c]]	= 'b';
	s[len-1-i]	= 'c';

	t[len-1-i]	= 'b';
	t[len-1-v[c]]	= 'c';

	cout << s << endl;
	cout << t << endl;
	return 0;
}