month = {1:31, 2:28, 3:31, 4:30, 5:31, 6:30, 7:31, 8:31, 9:30, 10:31, 11:30, 12:31}
hd = 0
for m in month.keys():
	for a in range(4):
		for b in range(10):
			d = int(str(a)+str(b))
			if d <= month[m] and d!= 0:
				if a + b == m:
					hd += 1


print(hd)