sum=Array.new()
ans=0
i=0,j=0,k=0,l=0
for i in 1..31 do
    sum.push("#{i}".chars[0].to_i+"#{i}".chars[1].to_i)
end
day31=[1,3,5,7,8,10,12]
day30=[4,6,9,11]
day28=[2]

for l in day31 do
    ans+=sum.count(l)
end

for j in day30 do
    ans+=sum.first(30).count(j)
end

for k in day28 do
    ans+=sum.first(28).count(k)
end
puts ans