n = [1,3,5,7,8,10,12]
m = [4,6,9,11]
c = 0
n.each do |i|
4.times do |j|
10.times do |k|
c += 1 if i  == (j + k) && j*10+k <32
end
end
end
m.each do |i|
4.times do |j|
10.times do |k|
c += 1 if i  == (j + k) && j*10+k <31
end
end
end
3.times do |j|
10.times do |k|
c += 1 if 2 == (j + k) && j*10+k <30
end
end
p c