from datetime import date, timedelta
#日付を取得
start = date(2015,1,1)
end = date(2015,12,31)

current = start
counter = 0

while current <= end:
	#月と日にちの数値を取得
	month = current.month
	d_tens = current.day//10
	d_ones = current.day%10
	
	#ハッピーデイを探す
	if (month == (d_tens + d_ones)):
		counter +=1
		#翌日へ
		current += timedelta(days=1)
	else:
		current += timedelta(days=1)
	
print(counter)