import re

digits = {
    "0": "0",
    "1": "1",
    "2": "2",
    "3": "3",
    "4": "4",
    "5": "5",
    "6": "6",
    "7": "7",
    "8": "8",
    "9": "9",
    "zero": "0",
    "one": "1",
    "two": "2",
    "three": "3",
    "four": "4",
    "five": "5",
    "six": "6",
    "seven": "7",
    "eight": "8",
    "nine": "9",
}

accumulator = 0
with open("input.txt") as input:
    while line := input.readline():
        if match := re.match(
            ".*?([0-9]|zero|one|two|three|four|five|six|seven|eight|nine).*([0-9]|zero|one|two|three|four|five|six|seven|eight|nine).*?",
            line,
        ):
            #print(match.groups(1))
            number = int(digits[match.groups(1)[0]] + digits[match.groups(1)[1]])
            #print(number)
            accumulator += number
        elif match := re.match(".*?([0-9]|zero|one|two|three|four|five|six|seven|eight|nine).*?", line):
            #print(match.groups(1))
            number = int(digits[match.groups(1)[0]] + digits[match.groups(1)[0]])
            #print(number)
            accumulator += number
        else:
            print(line)
print(accumulator)