Wrong Answer.wrong answer Too long on line 1.

求助，谢谢！

A = float(input())

A =int(A * 10)

B_1 = A % 10
B_2 = int((A-B_1) / 10) % 10
B_3 = int((A - B_1 - B_2) / 100) % 10
B_4 = int(A/1000)

C = B_1 + 0.1 * B_2 + 0.01 * B_3 + 0.001 * B_4
print(C)