a = int(input())

if 0 < a < 3000:

if a % 4 == 0 and a % 100 != 0: 

    print("Y")

elif a % 400 == 0:

print("Y") 

elif a % 4 != 0:

print("N") 

elif a % 100 == 0:

print("N") 

else:

 print("N")