ans = 0
for month in 1..12
	case month
	when 1,3,5,7,8,10,12
		lastday = 31
	when 2
		lastday = 29
	when 4,6,9,11
		lastday = 30
	end

	for day in 1..lastday
		daysum = 0
		day.to_s.split("").map {|i| daysum += i.to_i }
		ans += 1 if daysum == month
	end
end

p ans