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#![allow(dead_code)]
#![allow(unused_variables)]
#![allow(unused_mut)]
use std::env;
use std::fs::File;
use std::io::Read;
#[derive(Debug, PartialEq, Clone)]
struct Line {
dir: char,
len: usize,
color: String,
}
fn flood(mut m: Vec<Vec<usize>>) -> (Vec<Vec<usize>>, usize) {
let mut changes = 0;
for y in 1..m.len() - 1 {
for x in 1..m[0].len() - 1 {
if m[y][x] == 2 {
for (yy, xx) in [(y - 1, x), (y + 1, x), (y, x + 1), (y, x - 1)] {
if m[yy][xx] == 0 {
changes += 1;
m[yy][xx] = 2;
}
}
}
}
}
(m, changes)
}
fn print_m(m: &Vec<Vec<usize>>) {
for l in m {
for a in l {
if a == &0 {
print!(".");
} else if a == &1 {
print!("#");
} else {
print!("{}", a);
}
}
println!();
}
}
fn main() {
let args: Vec<String> = env::args().collect();
let filename = if args.len() == 1 {
"in/".to_owned() + args[0].split('/').last().unwrap() + ".pzl"
} else {
args[1].clone()
};
let mut f = File::open(filename).expect("cannot open file");
let mut content = String::new();
f.read_to_string(&mut content).expect("cannot read file");
let lines = content.trim_end().split('\n');
let mut path: Vec<Line> = Vec::new();
for line in lines {
let (a, ar) = line.split_once(' ').unwrap();
let (b, c) = ar.split_once(' ').unwrap();
let a = a.chars().next().unwrap();
let b = b.parse().unwrap();
// let c:u32 = c[2..c.len()-1].parse().unwrap();
path.push(Line {
dir: a,
len: b,
color: c.to_string(),
});
}
let mut res1 = 0;
let mut field = vec![vec![0; 600]; 600];
let x0 = 300;
let y0 = 300;
let mut x = x0;
let mut y = y0;
field[y0 + 1][x0 + 1] = 2;
res1 += 1;
for l in path {
match l.dir {
'R' => {
for i in x..x + l.len {
field[y][i] = 1;
}
x += l.len;
res1 += l.len;
}
'L' => {
for i in x - l.len..=x {
field[y][i] = 1;
}
x -= l.len;
res1 += l.len;
}
'U' => {
for i in y - l.len..=y {
field[i][x] = 1;
}
y -= l.len;
res1 += l.len;
}
'D' => {
for i in y..y + l.len {
field[i][x] = 1;
}
y += l.len;
res1 += l.len;
}
_ => panic!(),
}
}
let mut changes = 1;
while changes != 0 {
(field, changes) = flood(field);
res1 += changes;
// print_m(&field);
}
let mut res2 = 0;
println!("res1: {}", res1);
println!("res2: {}", res2);
}
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