gistfile1.txt

# main.py
import sys
import functools

def main():
    input_data = sys.stdin.read().strip().splitlines()
    if not input_data:
        return

    try:
        num_test_cases = int(input_data[0])
    except:
        return

    results = []
    index = 1
    while index < len(input_data):
        if index + 1 >= len(input_data):
            results.append(-1)
            break

        try:
            x = int(input_data[index].strip())
            yn_line = input_data[index + 1].strip()
            yn_parts = list(map(int, yn_line.split()))

            if len(yn_parts) != x:
                results.append(-1)
            else:
                filtered = [n for n in yn_parts if n <= 0]
                fourth_powers = [n ** 4 for n in filtered]
                total = functools.reduce(lambda a, b: a + b, fourth_powers, 0)
                results.append(total)

            index += 2
        except:
            results.append(-1)
            index += 2

    for result in results:
        print(result)

if __name__ == "__main__":
    main()