my_list = [3, -6, 3, -1, 23, -11, 0, -8]
print("列表如下:")
print(my_list)

x = 3
my_list_length = len(my_list)

my_result = 0

for i in range(my_list_length):
    my_sum = my_list[i]

    for j in range(my_list_length - i - 1):
        my_sum = my_sum * x

    my_result = my_result + my_sum

print("结果为:")
print(my_result)

列表如下:
[3, -6, 3, -1, 23, -11, 0, -8]
结果为:
3349