fn main() {
    let part2 = true;
    let english_digit_names = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"];


    let stdin = std::io::stdin();
    let mut sum = 0;

    for line in stdin.lines() {
        let line = line.unwrap();

        let mut first: Option<u32> = None;
        let mut last = 0;
        for i in 0..line.chars().count() {
            let slice = &line[i..];

            let first_char = slice.chars().next().unwrap();
            if first_char.is_digit(10) {
                if first == None {
                    first = first_char.to_digit(10);
                }

                last = first_char.to_digit(10).unwrap();
            }

            if part2 {
                for (i, name) in english_digit_names.iter().enumerate() {
                    if slice.starts_with(name) {
                        if first == None {
                            first = Some(i.try_into().unwrap());
                        }

                        last = i.try_into().unwrap();
                    }
                }
            }
        }

        sum += first.unwrap() * 10;
        sum += last;
    }

    println!("{}", sum);
}