#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <string>
#include <map>
#include <set>

using namespace std;

int main()
{
#ifdef DEBUG
    freopen("input.txt", "r", stdin);
#endif
    int n;
    cin >> n;
    if (n == 2)
    {
        cout << "AA" << endl << "22" << endl;
        return 0;
    }
    else if (n == 4)
    {
        cout << "AAA" << endl << "2222" << endl;
        return 0;
    }
    if (n % 2 == 1)
    {
        int s2 = 1;
        while (s2 * 2 < n) s2 *= 2;
        for (int i = 0; i <= s2; i++) printf("A");
        printf("\n");
        for (int i = 0; i < (n - s2); i++) printf("21");
        for (int i = 0; i < 2 * s2 - n; i++) printf("2");
        printf("\n");
    }
    else
    {
        int s2 = 4;
        while (s2 * 2 < n) s2 *= 2;
        for (int i = 0; i <= s2 / 2 + 1; i++) printf("A");
        printf("\n");
        for (int i = 0; i < (n - s2); i++) printf("21");
        for (int i = 0; i < 2 * s2 - n; i++) printf("2");
        printf("\n");
    }
    return 0;
}
