综合练习P3

def solve(n, arr):
    n = int(n)
    arr = list(map(int, str(arr).split(',')))
    result = 0
    for i in range(n - 1):
        for j in range(i + 1, n):
            a, b = arr[i], arr[j]
            xor_bits = bin(a ^ b).count('1')
            and_bits = bin(a & b).count('1')
            if xor_bits > and_bits:
                result += 1
    print(result)