let inpt = readLine()!

var ans1 = inpt.count * 2

ans1 += inpt.map{ $0 }.filter{ "0469".map{$0 }.contains($0)}.count
ans1 += inpt.map{ $0 }.filter{ $0 == "8"}.count * 2
ans1 += 1

var ans2 = 1
ans2 += inpt.count
ans2 += inpt.map{ $0 }.filter{ "0469".map{$0 }.contains($0)}.count
ans2 += inpt.map{ $0 }.filter{ $0 == "8"}.count * 2

print(min(ans1, ans2))