#
# Compute the amount of federal income tax payable without considering any
# deductions.
#
LIMIT_1 = 45916
LIMIT_2 = 91831
LIMIT_3 = 142353
LIMIT_4 = 202800

RATE_1 = 0.150
RATE_2 = 0.205
RATE_3 = 0.260
RATE_4 = 0.290
RATE_5 = 0.330

# Read the income from the user
income = float(input("Enter the income: "))

# Compute the amount of tax payable
if income < LIMIT_1:
  tax = RATE_1 * income
elif income < LIMIT_2:
  tax = RATE_1 * LIMIT_1 + RATE_2 * (income - LIMIT_1)
elif income < LIMIT_3:
  tax = RATE_1 * LIMIT_1 + RATE_2 * (LIMIT_2 - LIMIT_1) + \
        RATE_3 * (income - LIMIT_2)
elif income < LIMIT_4:
  tax = RATE_1 * LIMIT_1 + \
        RATE_2 * (LIMIT_2 - LIMIT_1) + \
        RATE_3 * (LIMIT_3 - LIMIT_2) + \
        RATE_4 * (income - LIMIT_3)
else:
  tax = RATE_1 * LIMIT_1 + \
        RATE_2 * (LIMIT_2 - LIMIT_1) + \
        RATE_3 * (LIMIT_3 - LIMIT_2) + \
        RATE_4 * (LIMIT_4 - LIMIT_3) + \
        RATE_5 * (income - LIMIT_4)

# Display the result
print("On an income of %.2f the income tax payable is $%.2f." % (income, tax))