#include <iostream>
#include <fstream>

#define CHAR_N 'x'
#define DELIMITER 'y'

using namespace std;

ofstream out("kmp.out");

int main()
{
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < n; i++) {
        out << CHAR_N;
    }
    cout << '\n';
    for (int i = 1; i <= m; i++)
        if (i % n) {
            out << CHAR_N;
        }
        else {
            out << DELIMITER;
        }
    return 0;
}