def scan; gets.split.map(&:to_i); end line = gets.chomp n = line.size s={} (0..9).each{|e|s[e.to_s]=0} line.chars{|c| s[c]+=1 } ana = s["0"]+s["4"]+s["6"]+s["8"]*2+s["9"] cnt1 = 0 cnt1 += n cnt1 += 1 cnt1 += ana cnt1 += n cnt2 = 0 cnt2 += 1 + ana cnt2 += n cnt2 += 1 + ana p [cnt1,cnt2].min