def main():

  hundred_medal = int(input())
  quarter_medal = int(input())
  one_medal =  int(input())

  if one_medal < 25:
    pass
  else:
    exchange_one_medal = one_medal // 25
    one_medal = one_medal - 25 * exchange_one_medal
    quarter_medal = quarter_medal + exchange_one_medal

  if quarter_medal < 4:
    pass
  else:
    exchange_quarter_medal = quarter_medal // 4
    quarter_medal = quarter_medal - 4 * exchange_quarter_medal
    hundred_medal = hundred_medal + exchange_quarter_medal

  if hundred_medal < 10:
    pass
  else:
    exchange_hundred_medal = hundred_medal // 10
    hundred_medal = hundred_medal - 10 * exchange_hundred_medal

  print(one_medal + quarter_medal + hundred_medal)

if __name__ == '__main__':
  main()