year = int(input("Enter A Year:"))
leap = False
year1 = year
year2 = year
modulo = year % 4

if modulo > 0 :
    leap = True 

modulo = year1 % 100

if modulo > 0 :
    leap = False 

modulo = year2 % 400 

if modulo > 0 :
    leap = True 

if leap == True :
    print("This is a leap year")
if leap == False :
    print("not a leap year")