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#include <iostream>
#include <vector>

using namespace std;

string getMoveMultiplier(int n, string moves) {
    string orgMoves = moves;
    string out = "";
    if (n == 1) return moves;
    if (n <= 9) {
        if (orgMoves.size() > 1) {
            out = "[";
        }
        out = out+orgMoves;
        //((char)(n + '0')) + "[" + 
        if (orgMoves.size() > 1) {
            out = out + "]";
        }
        out = ((char)(n + '0')) + out;
        return out;
    }
    vector<pair<int, int>> tmp;
    int i = 0;
    int divisor = 9;
    while (n) {
        if (n % divisor) tmp.push_back({ i, n % divisor });

        n /= divisor;

        i++;
    }

    out = "";
    for (int i = 0; i < tmp.size(); i++) {
        for (int j = 0; j < tmp[i].first; j++) {
            out = out + ((char)(divisor+'0'));
            if (orgMoves.size() * tmp[i].second == 1 && j == tmp[i].first - 1) continue;

            out = out + "[";
        }
        for(int j = 0; j<tmp[i].second; j++)
            out = out + orgMoves;
        for (int j = 0; j < tmp[i].first; j++) {
            if (orgMoves.size() * tmp[i].second == 1 && j == tmp[i].first - 1) continue;


            out += "]";
        }
    }

    return out;
}

int main() {
    int n;
    cin >> n;

    //string tmp;
    for (int i = n; i > 0; i--) {
        //cout<<i<<"C";
        cout << getMoveMultiplier(i, "C");
        //tmp += getMoveMultiplier(i, "C");
        if (i > 1) {
            cout << getMoveMultiplier(i - 1, "AE");
            //tmp+= getMoveMultiplier(i - 1, "AE");
        }
        //cout<<i-1<<"[AE]";
       //tmp += "A";
        cout << "A";
    }

    //tmp += getMoveMultiplier(n, "E");
    cout << getMoveMultiplier(n, "E");
    //cout<<n<<"E";

    //cout << endl<<tmp.size();


    return 0;
}