def findFirstAndLastInt(inp):
  first = 0
  last = 0
  for i in inp:
    if i.isdigit():
      if first == 0:
        first = i
      else:
        last = i
  if last == 0:
    last = first
  
  return int(first), int(last)


def main():
  inputs = []
  with open("input.in", "r") as f:
      for line in f:
          inputs.append(line.strip())

  s = 0
  for inp in inputs:
    first, last = findFirstAndLastInt(inp)
    s += first*10 + last
  
  print(s)


if __name__ == "__main__":
    main()