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use std::{env::args, io::stdin};
const NUM_WORDS: [(&str, &str); 9] = [
("one", "1"),
("two", "2"),
("three", "3"),
("four", "4"),
("five", "5"),
("six", "6"),
("seven", "7"),
("eight", "8"),
("nine", "9"),
];
fn word_to_digit(word: &str) -> &str {
match word {
"one" => "1",
"two" => "2",
"three" => "3",
"four" => "4",
"five" => "5",
"six" => "6",
"seven" => "7",
"eight" => "8",
"nine" => "9",
num => num,
}
}
fn get_digits(line: &str) -> u32 {
let mut found = Vec::new();
let find_words = args().any(|b| b == "-b");
for (word, num) in NUM_WORDS {
found.extend(line.match_indices(num));
if find_words {
found.extend(line.match_indices(word));
}
}
found.sort();
let first = word_to_digit(found.first().unwrap().1);
let last = word_to_digit(found.last().unwrap().1);
let combined = format!("{first}{last}");
combined.parse().unwrap()
}
fn main() {
let i: u32 = stdin()
.lines()
.filter_map(|l| Some(get_digits(&l.ok()?)))
.sum();
println!("{i}");
}
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