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use std::{collections::HashSet, i64, io}; | |
const INPUT: &'static str = include_str!("../input.txt"); | |
fn main() -> io::Result<()> { | |
let mut valid_count_one = 0; | |
let mut valid_count_two = 0; | |
for passport in INPUT.split("\n\n") { | |
if is_valid_one(passport) { | |
valid_count_one += 1; | |
} | |
if is_valid_two(passport) { | |
valid_count_two += 1; | |
} | |
} | |
println!("Part One: {}", valid_count_one); | |
println!("Part Two: {}", valid_count_two); | |
Ok(()) | |
} | |
fn is_valid_one(pass: &str) -> bool { | |
let mut required_props: HashSet<&str> = [ | |
"byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid", /*, "cid" */ | |
] | |
.iter() | |
.cloned() | |
.collect(); | |
for line in pass.lines() { | |
let pairs = line.split(' '); | |
for pair in pairs { | |
let key = pair.split(':').next().unwrap(); | |
required_props.remove(key); | |
} | |
} | |
return required_props.len() == 0; | |
} | |
fn is_valid_two(pass: &str) -> bool { | |
let mut required_props: HashSet<&str> = [ | |
"byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid", /*, "cid" */ | |
] | |
.iter() | |
.cloned() | |
.collect(); | |
for line in pass.lines() { | |
let pairs = line.split(' '); | |
for pair in pairs { | |
let mut pair = pair.split(':'); | |
let key = pair.next().unwrap(); | |
let val = pair.next().unwrap(); | |
if validate_key(key, val) { | |
required_props.remove(key); | |
} else { | |
return false; | |
} | |
} | |
} | |
return required_props.len() == 0; | |
} | |
fn validate_key(key: &str, val: &str) -> bool { | |
let valid_ecls: HashSet<&'static str> = ["amb", "blu", "brn", "gry", "grn", "hzl", "oth"] | |
.iter() | |
.cloned() | |
.collect(); | |
match key { | |
"byr" => (1920..=2002).contains(&val.parse::<usize>().unwrap_or(0)), | |
"iyr" => (2010..=2020).contains(&val.parse::<usize>().unwrap_or(0)), | |
"eyr" => (2020..=2030).contains(&val.parse::<usize>().unwrap_or(0)), | |
"hgt" => { | |
let mut val = val.chars(); | |
let num_part: usize = (&mut val) | |
.take_while(|&c| c != 'c' && c != 'i') | |
.collect::<String>() | |
.parse() | |
.unwrap_or(0); | |
// lol idk how 2 rust | |
let unit = &(val.collect::<String>().to_owned())[..]; | |
match unit { | |
"n" => (59..=76).contains(&num_part), | |
"m" => (150..=193).contains(&num_part), | |
_ => false, | |
} | |
} | |
"hcl" => match val.strip_prefix('#') { | |
None => false, | |
Some(hex_str) => match i64::from_str_radix(hex_str, 16) { | |
Ok(_) => true, | |
Err(_) => false, | |
}, | |
}, | |
"ecl" => valid_ecls.contains(val), | |
"pid" => val.len() == 9 && val.parse::<i32>().unwrap_or(-1) > 0, | |
_ => true, | |
} | |
} |
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