K = int(input()) 
A = [2, 3, 5, 7, 11, 13]
B = [4, 6, 8, 9, 10, 12]
ANS = 0
for I in range(6):
   for J in range(6):
   	  if A[I] * B[J] == K:
   	  	 ANS += 1
print(ANS / 36)