import time

with open("input.txt") as file:
    lines = [line.rstrip() for line in file]

first_digit = None
last_digit = None
things = []
stupid_letters = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
stupid_letters_rev = ["eno", "owt", "eerht", "ruof", "evif", "xis", "neves", "thgie", "enin"]

for line in lines:
    first_digit = None
    last_digit = None

    letter_index = 0
    for letter in line:
        if letter.isdigit():
            if first_digit is None:
                first_digit = letter
                first_digit_index = letter_index
                last_digit = letter
                last_digit_index = letter_index
            else:
                last_digit = letter
                last_digit_index = letter_index
        letter_index+=1

    keep_going = True
    #find first digit in stupid format
    while (keep_going):
        match = False
        for stupid_letter in stupid_letters:
            if line.find(stupid_letter) == -1:
                continue
            if line.find(stupid_letter) < first_digit_index:
                first_digit = stupid_letters.index(stupid_letter)+1
                first_digit_index = line.find(stupid_letter)
                match = True
        if not match:
            keep_going = False

    #find last digit in stupid format by reversing the whole string bc i am very smart
    rev_line = line[::-1]
    new_last_digit_index = (len(line)-1) - last_digit_index
    keep_going = True

    while (keep_going):
        match = False
        for stupid_letter in stupid_letters_rev:
            #print(stupid_letter)
            #time.sleep(1)
            if rev_line.find(stupid_letter) == -1:
                continue
            if rev_line.find(stupid_letter) < new_last_digit_index:
                #print("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA")
                last_digit = stupid_letters_rev.index(stupid_letter)+1
                new_last_digit_index = rev_line.find(stupid_letter)
                match = True

        if not match:
            keep_going = False

    things.append(int(f"{first_digit}{last_digit}"))
    print(int(f"{first_digit}{last_digit}"))

sum = 0
for thing in things:
    sum += thing

print(sum)