year = int(input("Enter a year to check if it i s leap year or not : "))

if year % 4 == 0:
    if year % 100 == 0:
        if(year % 400 == 0):
            print(f"{year} is a leap year")
        else:
            print(f"{year} is not a leap year")
    else:
        print(f"{year} is a leap year")
else:
    print(f"{year} is not a leap year")