# Problem 1: Eligibility to Vote
is_citizen = input("Are you a citizen? (yes/no): ").lower() == "yes"
age = int(input("Enter your age: "))

if is_citizen and age >= 18:
    print("You are eligible to vote!")
else:
    print("You are not eligible to vote.")
# Problem 2: Employee Bonus Calculation
years_of_service = int(input("Enter your years of service: "))
salary = float(input("Enter your salary: "))

if years_of_service > 5:
    bonus_percentage = 5
    bonus_amount = (bonus_percentage / 100) * salary
    print(f"Congratulations! You have earned a {bonus_percentage}% bonus of ${bonus_amount:.2f}.")
else:
    print("Sorry, you are not eligible for a bonus.")
# Problem 3: Grading System
marks = int(input("Enter your marks: "))

if marks < 25:
    grade = "F"
elif marks <= 45:
    grade = "E"
elif marks <= 50:
    grade = "D"
elif marks <= 60:
    grade = "C"
elif marks <= 80:
    grade = "B"
else:
    grade = "A"

print(f"Your grade is: {grade}")