#!/usr/bin/env python3

import re

digits = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
group = "|".join(digits + ["[0-9]"])

tot = 0
with open("lines.txt") as lines:
    for line in lines.readlines():
        print()
        line = line.rstrip()
        print(line)
        last = re.search(rf"^.*({group})", line)
        first = re.search(rf"({group}).*$", line)
        print(first, last)
        f = first[1]
        l = last[1]
        print(f, l)
        if f in digits:
            f = str(digits.index(f))
        if l in digits:
            l = str(digits.index(l))
        print(f, l)
        numb = int(f + l)
        tot += numb
        print(numb)
print()

print(tot)