#include <iostream>
using namespace std;

class Bai4 {
private:
    int* arr;
    int sl;
    bool TonTai(int x) const {
        for (int i = 0; i < sl; i++) {
            if (arr[i] == x) return true;
        }
        return false;
    }

public:
    ~Bai4() {
        delete[] arr;
        arr = nullptr;
        sl = 0;
    }
    Bai4(int s = 0) {
        sl = s;
        arr = (sl > 0) ? new int[sl] : nullptr;
    }
    Bai4(const Bai4 &other) {
        sl = other.sl;
        arr = new int[sl];
        for (int i = 0; i < sl; i++) {
            arr[i] = other.arr[i];
        }
    }
    Bai4& operator=(const Bai4 &other) {
        if (this != &other) {
            delete[] arr;
            sl = other.sl;
            arr = new int[sl];
            for (int i = 0; i < sl; i++) {
                arr[i] = other.arr[i];
            }
        }
        return *this;
    }
    void Nhap() {
        delete[] arr;
        int n;
        cin >> n;
        arr = new int[n];
        sl = 0;
        for (int i = 0; i < n; i++) {
            int val;
            cin >> val;
            if (!TonTai(val)) {
                arr[sl++] = val;
            }
        }
    }
    void Xuat() const {
        cout << "{ ";
        for (int i = 0; i < sl; i++) {
            cout << arr[i] << " ";
        }
        cout << "}\n";
    }
    void ThemPhanTu(int x) {
        if (TonTai(x)) return;
        int* temp = new int[sl + 1];
        for (int i = 0; i < sl; i++) {
            temp[i] = arr[i];
        }
        temp[sl] = x;
        delete[] arr;
        arr = temp;
        sl++;
    }
    void XoaPhanTu(int x) {
        int pos = -1;
        for (int i = 0; i < sl; i++) {
            if (arr[i] == x) {
                pos = i;
                break;
            }
        }
        if (pos == -1) return;
        int* temp = new int[sl - 1];
        for (int i = 0, j = 0; i < sl; i++) {
            if (i == pos) continue;
            temp[j++] = arr[i];
        }
        delete[] arr;
        arr = temp;
        sl--;
    }
    void Hop(const Bai4 &a) {
        Bai4 kq = *this;
        for (int i = 0; i < a.sl; i++) {
            if (!kq.TonTai(a.arr[i])) {
                kq.ThemPhanTu(a.arr[i]);
            }
        }
        cout << "Ket qua Hop: ";
        kq.Xuat();
    }
    void Giao(const Bai4 &a) {
        Bai4 kq;
        for (int i = 0; i < sl; i++) {
            if (a.TonTai(arr[i])) {
                kq.ThemPhanTu(arr[i]);
            }
        }
        cout << "Ket qua Giao: ";
        kq.Xuat();
    }
    void Tru(const Bai4 &a) {
        Bai4 kq;
        for (int i = 0; i < sl; i++) {
            if (!a.TonTai(arr[i])) {
                kq.ThemPhanTu(arr[i]);
            }
        }
        cout << "Ket qua Tru (A \\ B): ";
        kq.Xuat();
    }
};

int main() {
    Bai4 A, B;
    A.Nhap();
    B.Nhap();
    A.Xuat();
    B.Xuat();
    A.Hop(B);
    A.Giao(B);
    A.Tru(B);
    return 0;
}