Write a Python program to input basic salary of an employee and calculate its Gross salary

basic = int(input("Enter the basic salary :- "))
if basic <= 10000:
    da  = basic * 0.8;
    hra = basic * 0.2;
elif basic <= 20000:
    da  = basic * 0.9;
    hra = basic * 0.25;
else:
    da  = basic * 0.95;
    hra = basic * 0.3;
    
gross = basic + hra + da;
print("GROSS SALARY OF EMPLOYEE is :- ",gross);