#include <iostream>
#include <vector>
 
using namespace std;
 
// Функция для вычисления XOR всех элементов до индекса k
int computeXOR(const vector<int>& prefixXOR, long long k) {
    if (k == 0) return 0;
    if (k > prefixXOR.size()) return prefixXOR.back();
    return prefixXOR[k - 1];
}
 
int main() {
    int t;
    cin >> t;
 
    while (t--) {
        int n;
        long long l, r;
        cin >> n >> l >> r;
 
        vector<int> a(n);
        for (int i = 0; i < n; ++i) {
            cin >> a[i];
        }
 
        // Вычисляем префиксный XOR
        vector<int> prefixXOR(n);
        prefixXOR[0] = a[0];
        for (int i = 1; i < n; ++i) {
            prefixXOR[i] = prefixXOR[i - 1] ^ a[i];
        }
 
        // Вычисляем a_l
        long long index = l - 1; // Переводим в 0-индексацию
        int result;
 
        if (index < n) {
            result = a[index];
        } else {
            long long half = index / 2;
            if (half < n) {
                result = computeXOR(prefixXOR, half);
            } else {
                result = computeXOR(prefixXOR, n);
            }
        }
 
        // Выводим результат
        cout << result << endl;
    }
 
    return 0;
}

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