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#![allow(dead_code)]
#![allow(unused_variables)]
#![allow(unused_mut)]
use std::cmp::max;
use std::cmp::min;
use std::fs::File;
use std::io::Read;
fn transpose<T>(original: Vec<Vec<T>>) -> Vec<Vec<T>> {
assert!(!original.is_empty());
let mut transposed = (0..original[0].len()).map(|_| vec![]).collect::<Vec<_>>();
for original_row in original {
for (item, transposed_row) in original_row.into_iter().zip(&mut transposed) {
transposed_row.push(item);
}
}
transposed
}
fn insert_rows(m: Vec<Vec<bool>>) -> Vec<Vec<bool>> {
let mut out = Vec::new();
for r in m {
if r.iter().any(|x| *x) {
out.push(r);
} else {
out.push(r.clone());
out.push(r);
}
}
out
}
fn print_m(m: &Vec<Vec<bool>>) {
for i in 0..m.len() {
for j in 0..m[0].len() {
if m[i][j] {
print!("#");
} else {
print!(".");
}
}
println!();
}
println!();
}
fn get_pos(m: &Vec<Vec<bool>>) -> Vec<(i32, i32)> {
let mut p = Vec::new();
for y in 0..m.len() {
for x in 0..m[0].len() {
if m[y][x] {
p.push((x as i32, y as i32));
}
}
}
p
}
fn main() {
// let filename = "in/day11.ref";
let filename = "in/day11.pzl";
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 m: Vec<Vec<bool>> = Vec::new();
for line in lines {
let mut r: Vec<bool> = Vec::new();
for c in line.chars() {
r.push(if c == '#' { true } else { false });
}
m.push(r);
}
let m2 = m.clone();
let m2t = transpose(m.clone());
let p2 = get_pos(&m2);
m = insert_rows(m);
m = transpose(m);
m = insert_rows(m);
m = transpose(m);
let p1 = get_pos(&m);
let mut res1 = 0;
let mut res2: i64 = 0;
for i in 0..p1.len() {
for j in i..p1.len() {
if i != j {
let (x1, y1) = p1[i];
let (x2, y2) = p1[j];
res1 += (x2 - x1).abs() + (y2 - y1).abs();
}
}
}
let add = 1000000;
for i in 0..p2.len() {
for j in i..p2.len() {
if i != j {
let (x1, y1) = p2[i];
let (x2, y2) = p2[j];
let x_min = min(x1, x2);
let x_max = max(x1, x2);
let y_min = min(y1, y2);
let y_max = max(y1, y2);
for y in y_min..y_max {
if m2[y as usize].iter().any(|a| *a) {
res2 += 1;
} else {
res2 += add;
}
}
for x in x_min..x_max {
if m2t[x as usize].iter().any(|a| *a) {
res2 += 1;
} else {
res2 += add;
}
}
}
}
}
println!("res1: {}", res1);
println!("res2: {}", res2);
assert_eq!(res1, 9681886);
assert_eq!(res2, 791134099634);
}
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