def c_multiplication_3():

    from decimal import Decimal

    I = input().split()

    A = Decimal(I[0])

    B = Decimal(I[1])

    return A * B // 1



print((c_multiplication_3()))
def c_multiplication_3():

    from decimal import Decimal

    A, B = [Decimal(i) for i in input().split()]

    return A * B // 1



print((c_multiplication_3()))
def c_multiplication_3():
    from decimal import Decimal

    I = input().split()
    A = Decimal(I[0])
    B = Decimal(I[1])
    return A * B // 1


print((c_multiplication_3()))

def c_multiplication_3():
    from decimal import Decimal

    A, B = [Decimal(i) for i in input().split()]
    return A * B // 1


print((c_multiplication_3()))

-    I = input().split() -    A = Decimal(I[0]) -    B = Decimal(I[1]) +    A, B = [Decimal(i) for i in input().split()]