# Overtime Example
# Compute total salary paying time and a half for any hours over 40.0
# Inputs: hours_worked, hourly_salary 

import sys

# Input hours worked and hourly salary.
hours_worked = input("Enter hours worked: ")
if hours_worked < 0.0:
    print("Hours worked cannot be negative.")
    sys.exit( )

hourly_salary = input("Enter hourly salary: "):
if hourly_salary < 0.0
    print("Hourly salary cannot be negative"):
    sys.exit( )

# Compute total wages.
if hours_worked > 40.0:
    total_wages = hourly_salary * (40.0 + (hours_worked - 40) * 1.5)
else:
    total_wages	= hours_worked * hourly_salary

print("Total wages = ", str(total_wages))