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This commit is contained in:
Sijmen 2019-12-08 12:27:24 +01:00
parent b45596b6a8
commit c31d6e53c2
Signed by: vijfhoek
GPG key ID: DAF7821E067D9C48
14 changed files with 1022 additions and 0 deletions
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1
.gitignore vendored
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@ -9,3 +9,4 @@
*.prof
__pycache__
target/

52
Day01/Day1A.s Normal file
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extern printf
extern scanf
;;;;;;;;;;;;
;;; TEXT ;;;
;;;;;;;;;;;;
section .text
global main
main:
sub rsp, 8
xor rcx, rcx
.loop:
lea rdi, [rel format]
lea rsi, [rel operation]
lea rdx, [rel count]
xor ax, ax
call scanf
xor rax, rax
mov eax, [rel count]
cmp byte [rel operation], '+'
je .add
neg rax
.add:
add rcx, rax
push rcx
lea rdi, [rel message]
mov rsi, rcx
xor ax, ax
call printf
pop rcx
jmp .loop
add rsp, 8
ret
;;;;;;;;;;;;
;;; DATA ;;;
;;;;;;;;;;;;
section .data
format: db "%c%d",0
message: db "%d",10,0
section .bss
buffer: resb 64
operation: resb 1
count: resb 4

128
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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <assert.h>
#include <string.h>
typedef struct {
uint8_t opcode;
uint32_t a, b, c;
} Instruction;
Instruction instructions[1024];
enum {
ADDR, ADDI, MULR, MULI, BANR, BANI, BORR, BORI,
SETR, SETI, GTIR, GTRI, GTRR, EQIR, EQRI, EQRR,
IP,
};
const char *names[] = {
"addr", "addi", "mulr", "muli", "banr", "bani", "borr", "bori",
"setr", "seti", "gtir", "gtri", "gtrr", "eqir", "eqri", "eqrr",
"#ip",
};
int instruction_read(Instruction *i, FILE *file) {
char mnemonic[64] = {0};
size_t count = fscanf(file, "%s %u %u %u", mnemonic, &i->a, &i->b, &i->c);
if (count != 4 && count != 2)
return 0;
for (int opcode = 0; opcode <= IP; opcode++) {
if (strcmp(names[opcode], mnemonic) == 0) {
i->opcode = opcode;
return 1;
}
}
printf("Unknown mnemonic '%s'\n", mnemonic);
return 0;
}
void instruction_execute(const Instruction *i, uint32_t *r, uint32_t *ip, uint32_t *ip_r) {
if (*ip_r != -1)
r[*ip_r] = *ip;
switch (i->opcode) {
// Addition
case ADDR: r[i->c] = r[i->a] + r[i->b]; break;
case ADDI: r[i->c] = r[i->a] + i->b; break;
// Multiplication
case MULR: r[i->c] = r[i->a] * r[i->b]; break;
case MULI: r[i->c] = r[i->a] * i->b; break;
// Bitwise AND
case BANR: r[i->c] = (r[i->a] & r[i->b]); break;
case BANI: r[i->c] = (r[i->a] & i->b); break;
// Bitwise OR
case BORR: r[i->c] = (r[i->a] | r[i->b]); break;
case BORI: r[i->c] = (r[i->a] | i->b); break;
// Assignment
case SETR: r[i->c] = r[i->a]; break;
case SETI: r[i->c] = i->a; break;
// Greater-than testing
case GTIR: r[i->c] = (i->a > r[i->b]); break;
case GTRI: r[i->c] = (r[i->a] > i->b); break;
case GTRR: r[i->c] = (r[i->a] > r[i->b]); break;
// Equality testing
case EQIR: r[i->c] = (i->a == r[i->b]); break;
case EQRI: r[i->c] = (r[i->a] == i->b); break;
case EQRR: r[i->c] = (r[i->a] == r[i->b]); break;
case IP: *ip_r = i->a; *ip -= 1; break;
default: assert(0);
}
if (*ip_r != -1)
*ip = r[*ip_r];
*ip += 1;
}
int main(int argc, char **argv) {
if (argc != 2) {
printf("Usage: %s [input]\n", argv[0]);
return EXIT_FAILURE;
}
FILE *file = fopen(argv[1], "r");
uint32_t registers[6] = {0};
uint32_t ip_reg = -1;
size_t instr_count = 0;
for (instr_count = 0; instr_count < 1024 && instruction_read(&instructions[instr_count], file); instr_count++) {
#ifdef DEBUG
printf("opcode: %2d (%s), a: %d, b: %d, c: %d\n", instructions[instr_count].opcode,
names[instructions[instr_count].opcode], instructions[instr_count].a, instructions[instr_count].b,
instructions[instr_count].c);
#endif
}
for (uint32_t i = 0; i < instr_count;) {
Instruction instruction = instructions[i];
#ifdef DEBUG
const char *name = names[instruction.opcode];
printf("opcode: %2d (%s), a: %d, b: %d, c: %d\n", instruction.opcode,
name, instruction.a, instruction.b, instruction.c);
#endif
instruction_execute(&instruction, registers, &i, &ip_reg);
#ifdef DEBUG
printf("registers: %d %d %d %d %d %d\n", registers[0], registers[1],
registers[2], registers[3], registers[4], registers[5]);
#endif
}
fclose(file);
printf("%d\n", registers[0]);
return EXIT_SUCCESS;
}

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Day20/Day20.py Normal file
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from collections import deque
from pprint import pprint
NORTH = 1
EAST = 2
SOUTH = 4
WEST = 8
ROOT = 0
IN_PARENS = 1
SKIPPING = 2
start_pos = 200, 200
grid = [[0] * start_pos[0] * 2 for _ in range(start_pos[1] * 2)]
min_x, max_x = start_pos
min_y, max_y = start_pos
def print_grid(x_=None, y_=None):
for y in range(min_y, max_y + 1):
for x in range(min_x, max_x + 1):
print(end="@")
print(end="-" if grid[y][x] & NORTH else "@")
print("#")
for x in range(min_x, max_x + 1):
print(end="|" if grid[y][x] & WEST else "@")
if (x, y) == start_pos:
print(end="X")
elif x == x_ and y == y_:
print(end=".")
else:
print(end=" ")
print("@")
print("@" * ((max_x - min_x) * 2 + 3))
def parse_input(inp):
global min_x, max_x, min_y, max_y
# print(inp, end="\n\n")
# print("\033[2J\033[;H")
stack = [(0, start_pos[0], start_pos[1])]
while stack:
# print("===================================")
# print(stack, end=" -> ")
start, x, y = stack.pop()
# print(start)
depth = 0
skip_to_end = False
for i in range(start, len(inp)):
c = inp[i]
if depth == 0 and not skip_to_end:
# print(f"{depth} {inp[:i]}\033[4;3{depth+1}m{inp[i]}\033[0m{inp[i+1:]} ({x:>2},{y:>2}) -> ", end="")
if c == "N": grid[y][x] |= NORTH; y -= 1; grid[y][x] |= SOUTH
elif c == "E": grid[y][x] |= EAST; x += 1; grid[y][x] |= WEST
elif c == "S": grid[y][x] |= SOUTH; y += 1; grid[y][x] |= NORTH
elif c == "W": grid[y][x] |= WEST; x -= 1; grid[y][x] |= EAST
if x < min_x: min_x = x
if x > max_x: max_x = x
if y < min_y: min_y = y
if y > max_y: max_y = y
# print(f"({x:>2},{y:>2})")
# print_grid(x, y)
# print()
if c == "(" and not skip_to_end:
if depth == 0:
stack.append((i + 1, x, y))
depth += 1
elif c == "|" and not skip_to_end:
if depth == 1:
stack.append((i + 1, x, y))
elif depth == 0:
skip_to_end = True
elif c == ")":
depth -= 1
if depth == -1:
skip_to_end = False
break
# print()
# print("\033[0;0H", end="")
# print_grid()
def bfs():
pos = start_pos
queue = deque([(pos, 0)])
seen = set()
lengths = []
max_len = 0
long_paths = 0
while queue:
(x, y), depth = queue.popleft()
if (x, y) in seen:
continue
seen.add((x, y))
if depth > max_len:
max_len = depth
if depth >= 1000:
long_paths += 1
if grid[y][x] & WEST: queue.append(((x - 1, y), depth + 1))
if grid[y][x] & EAST: queue.append(((x + 1, y), depth + 1))
if grid[y][x] & NORTH: queue.append(((x, y - 1), depth + 1))
if grid[y][x] & SOUTH: queue.append(((x, y + 1), depth + 1))
print("part 1:", max_len)
print("part 2:", long_paths)
def main():
inp = input()
parse_input(inp[1:-1])
bfs()
main()

184
Day21/Day21A.cpp Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <assert.h>
#include <string.h>
#include <locale.h>
#include <climits>
#include <unordered_set>
typedef struct {
uint8_t opcode;
int32_t a, b, c;
} Instruction;
Instruction instructions[1024];
enum {
ADDR, ADDI, MULR, MULI, BANR, BANI, BORR, BORI,
SETR, SETI, GTIR, GTRI, GTRR, EQIR, EQRI, EQRR,
IP,
};
const char *names[] = {
"addr", "addi", "mulr", "muli", "banr", "bani", "borr", "bori",
"setr", "seti", "gtir", "gtri", "gtrr", "eqir", "eqri", "eqrr",
"#ip",
};
int instruction_read(Instruction *i, FILE *file) {
char mnemonic[64] = {0};
size_t count = fscanf(file, "%s %u %u %u", mnemonic, &i->a, &i->b, &i->c);
if (count != 4 && count != 2)
return 0;
for (int opcode = 0; opcode <= IP; opcode++) {
if (strcmp(names[opcode], mnemonic) == 0) {
i->opcode = opcode;
return 1;
}
}
printf("Unknown mnemonic '%s'\n", mnemonic);
return 0;
}
void instruction_execute(const Instruction *i, int32_t *r, int32_t *ip, int32_t *ip_r) {
if (*ip_r != -1)
r[*ip_r] = *ip;
switch (i->opcode) {
// Addition
case ADDR: r[i->c] = r[i->a] + r[i->b]; break;
case ADDI: r[i->c] = r[i->a] + i->b; break;
// Multiplication
case MULR: r[i->c] = r[i->a] * r[i->b]; break;
case MULI: r[i->c] = r[i->a] * i->b; break;
// Bitwise AND
case BANR: r[i->c] = (r[i->a] & r[i->b]); break;
case BANI: r[i->c] = (r[i->a] & i->b); break;
// Bitwise OR
case BORR: r[i->c] = (r[i->a] | r[i->b]); break;
case BORI: r[i->c] = (r[i->a] | i->b); break;
// Assignment
case SETR: r[i->c] = r[i->a]; break;
case SETI: r[i->c] = i->a; break;
// Greater-than testing
case GTIR: r[i->c] = (i->a > r[i->b]); break;
case GTRI: r[i->c] = (r[i->a] > i->b); break;
case GTRR: r[i->c] = (r[i->a] > r[i->b]); break;
// Equality testing
case EQIR: r[i->c] = (i->a == r[i->b]); break;
case EQRI: r[i->c] = (r[i->a] == i->b); break;
case EQRR: r[i->c] = (r[i->a] == r[i->b]); break;
case IP: *ip_r = i->a; *ip -= 1; break;
default: assert(0);
}
if (*ip_r != -1)
*ip = r[*ip_r];
*ip += 1;
}
int main(int argc, char **argv) {
setlocale(LC_NUMERIC, "");
if (argc != 2) {
printf("Usage: %s [input]\n", argv[0]);
return EXIT_FAILURE;
}
FILE *file = fopen(argv[1], "r");
int32_t jump_regs[6] = {-1};
int32_t registers[6] = {INT_MAX, 0};
int32_t ip_reg = -1;
size_t instr_count = 0;
for (instr_count = 0; instr_count < 1024 && instruction_read(&instructions[instr_count], file); instr_count++) {
if (instructions[instr_count].opcode == IP) {
ip_reg = instructions[instr_count].a;
instr_count -= 1;
continue;
}
printf("[%2zu] %s %d %d %d\n", instr_count, names[instructions[instr_count].opcode],
instructions[instr_count].a, instructions[instr_count].b,
instructions[instr_count].c);
}
printf("\n");
std::unordered_set<size_t> breakpoints;
bool stepping = true;
uint64_t instructions_executed = 0;
for (int32_t i = 0; i < instr_count;) {
Instruction instruction = instructions[i];
if (breakpoints.find(i) != breakpoints.end())
stepping = true;
if (stepping) {
const char *name = names[instruction.opcode];
printf("[%2d] \033[33m%s %d %d %d\033[0m\r", i,
name, instruction.a, instruction.b, instruction.c);
}
instruction_execute(&instruction, registers, &i, &ip_reg);
if (stepping) {
printf("\033[30C[%d, %d, %d, %d, %d, %d]\n", registers[0], registers[1],
registers[2], registers[3], registers[4], registers[5]);
read:
printf("> ");
char c;
scanf(" %c", &c);
switch (c) {
case 0:
printf("q\n");
[[fallthrough]];
case 'q':
i = instr_count;
break;
case 'c':
stepping = false;
break;
case 'b':
breakpoints.insert(i);
break;
case 's':
break;
case '\n':
goto read;
default:
printf("Unknown command '%c'\n", c);
goto read;
}
}
instructions_executed += 1;
if (!stepping && instructions_executed % (1 << 20) == 0) {
printf("%'lu %d ", instructions_executed, i);
printf("[%'d, %'d, %'d, %'d, %'d, %'d]\033[K\r", registers[0], registers[1],
registers[2], registers[3], registers[4], registers[5]);
}
}
printf("instructions: %lu\n", instructions_executed);
fclose(file);
printf("%d\n", registers[0]);
return EXIT_SUCCESS;
}

4
Day22/day22/Cargo.lock generated Normal file
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[[package]]
name = "Day22"
version = "0.1.0"

7
Day22/day22/Cargo.toml Normal file
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[package]
name = "Day22"
version = "0.1.0"
authors = ["Sijmen Schoon <me@sijmenschoon.nl>"]
edition = "2018"
[dependencies]

123
Day22/day22/src/grid.rs Normal file
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use super::{Point, State, Tool};
use std::collections::{BinaryHeap, HashMap};
const ROCKY: u16 = 0;
const WET: u16 = 1;
const NARROW: u16 = 2;
fn neighbors((x, y): Point) -> Vec<Point> {
vec![(x + 1, y), (x - 1, y), (x, y + 1), (x, y - 1)]
}
fn distance((ax, ay): Point, (bx, by): Point) -> usize {
((ax - bx).abs() + (ay - by).abs()) as usize
}
fn valid_items(region: u16) -> Vec<Tool> {
match region {
ROCKY => vec![Tool::Torch, Tool::Climbing],
WET => vec![Tool::None, Tool::Climbing],
NARROW => vec![Tool::None, Tool::Torch],
_ => panic!(),
}
}
pub struct Grid {
pub grid: Vec<Vec<Option<u16>>>,
pub depth: usize,
pub target: Point,
}
impl Grid {
pub fn new(depth: usize, target: Point) -> Self {
Self {
grid: vec![vec![None; depth]; depth],
depth,
target,
}
}
pub fn erosion(&mut self, pos: Point) -> u16 {
let m = 20183;
let value = match pos {
(0, 0) => self.depth,
_ if pos == self.target => self.depth,
(x, 0) => (x as usize * 16807 + self.depth) % m,
(0, y) => (y as usize * 48271 + self.depth) % m,
(x, y) => {
if let Some(value) = self.grid[y as usize][x as usize] {
value as usize
} else {
let value = usize::from(self.erosion((x - 1, y)))
* usize::from(self.erosion((x, y - 1)));
let value_ = (value + self.depth) % m;
self.grid[y as usize][x as usize] = Some(value_ as u16);
value_
}
}
} as u16;
value
}
fn valid(&self, (x, y): Point) -> bool {
x >= 0 && y >= 0 && x < self.depth as isize && y < self.depth as isize
}
pub fn path_find(&mut self) -> usize {
let start = (0, 0);
let first = State::new(0, start, distance(start, self.target), Tool::Torch);
let mut queue = BinaryHeap::new();
queue.push(first);
let mut visited = HashMap::new();
while !queue.is_empty() {
let current = queue.pop().unwrap();
if visited.contains_key(&current.key()) && current.depth >= visited[&current.key()] {
continue;
}
visited.insert(current.key(), current.depth);
if current.position == self.target && current.tool == Tool::Torch {
return current.depth;
}
let tools = valid_items(self.erosion(current.position) % 3);
for tool in tools {
if tool != current.tool {
queue.push(State::new(
current.depth + 7,
current.position,
current.distance,
tool,
));
}
}
for new_pos in neighbors(current.position) {
if !self.valid(new_pos) {
continue;
}
let region = self.erosion(new_pos) % 3;
if valid_items(region).contains(&current.tool) {
let dist = distance(new_pos, self.target);
queue.push(State::new(current.depth + 1, new_pos, dist, current.tool));
}
}
}
panic!("did not find path")
}
pub fn risk(&mut self) -> u16 {
let mut risk = 0;
for y in 0..=self.target.1 {
for x in 0..=self.target.0 {
risk += self.erosion((x, y)) % 3;
}
}
risk
}
}

31
Day22/day22/src/main.rs Normal file
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mod grid;
mod state;
use self::grid::Grid;
use self::state::State;
use std::env;
pub type Point = (isize, isize);
#[derive(PartialEq, Eq, Clone, Copy, Hash, Debug)]
pub enum Tool {
None,
Torch,
Climbing,
}
fn main() {
let args: Vec<_> = env::args().collect();
if args.len() != 4 {
println!("Usage: {} [depth] [target_x] [target_y]", args[0]);
return;
}
let depth = args[1].parse().unwrap();
let target: Point = (args[2].parse().unwrap(), args[3].parse().unwrap());
let mut grid = Grid::new(depth, target);
println!("part 1: {}", grid.risk());
println!("part 2: {}", grid.path_find());
}

41
Day22/day22/src/state.rs Normal file
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use super::{Point, Tool};
use std::cmp::Ordering;
#[derive(Copy, Clone, Eq, PartialEq, Hash)]
pub struct State {
pub depth: usize,
pub position: Point,
pub distance: usize,
pub tool: Tool,
}
impl State {
pub fn new(depth: usize, position: Point, distance: usize, tool: Tool) -> Self {
Self {
depth,
position,
distance,
tool,
}
}
pub fn priority(&self) -> usize {
self.depth + self.distance
}
pub fn key(&self) -> (Point, Tool) {
(self.position, self.tool)
}
}
impl Ord for State {
fn cmp(&self, other: &State) -> Ordering {
other.priority().cmp(&self.priority())
}
}
impl PartialOrd for State {
fn partial_cmp(&self, other: &State) -> Option<Ordering> {
Some(self.cmp(other))
}
}

95
Day23/day23/Cargo.lock generated Normal file
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@ -0,0 +1,95 @@
[[package]]
name = "aho-corasick"
version = "0.6.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"memchr 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "cfg-if"
version = "0.1.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "day23"
version = "0.1.0"
dependencies = [
"regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "lazy_static"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "libc"
version = "0.2.45"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "memchr"
version = "2.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
"version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "regex"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"aho-corasick 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)",
"memchr 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
"regex-syntax 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
"thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
"utf8-ranges 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "regex-syntax"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"ucd-util 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "thread_local"
version = "0.3.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "ucd-util"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "utf8-ranges"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "version_check"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
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8
Day23/day23/Cargo.toml Normal file
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@ -0,0 +1,8 @@
[package]
name = "day23"
version = "0.1.0"
authors = ["Sijmen Schoon <me@sijmenschoon.nl>"]
edition = "2018"
[dependencies]
regex = "^1.1.0"

1
Day23/day23/src/attempts.txt Normal file
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@ -0,0 +1 @@
102330992 -> too low

217
Day23/day23/src/main.rs Normal file
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@ -0,0 +1,217 @@
use regex::Regex;
use std::cmp::Ordering;
use std::collections::BinaryHeap;
use std::io;
use std::io::prelude::*;
type Point = (i64, i64, i64);
fn distance((ax, ay, az): Point, (bx, by, bz): Point) -> i64 {
(bx - ax).abs() + (by - ay).abs() + (bz - az).abs()
}
#[derive(Debug, Eq, PartialEq)]
struct Bot {
position: Point,
radius: i64,
}
impl Bot {
fn in_range(&self, other: &Self) -> bool {
distance(self.position, other.position) <= self.radius
}
}
impl Ord for Bot {
fn cmp(&self, other: &Self) -> Ordering {
self.radius.cmp(&other.radius)
}
}
impl PartialOrd for Bot {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
#[derive(Debug, Eq, PartialEq)]
struct Node {
min: Point,
max: Point,
count: i64,
}
impl Node {
fn new(min: Point, max: Point, count: i64) -> Self {
Self { min, max, count }
}
fn score(&self) -> (i64, i128, i64) {
let area = (self.max.0 - self.min.0) as i128
* (self.max.1 - self.min.1) as i128
* (self.max.2 - self.min.2) as i128;
let dist = distance((0, 0, 0), self.min);
(self.count, -area, -dist)
}
}
impl Ord for Node {
fn cmp(&self, other: &Self) -> Ordering {
self.score().cmp(&other.score())
}
}
impl PartialOrd for Node {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
fn sq_dist(p: &Point, min: &Point, max: &Point) -> i64 {
let mut dist = 0;
if p.0 < min.0 {
dist += (min.0 - p.0) * (min.0 - p.0);
} else if p.0 > max.0 {
dist += (p.0 - max.0) * (p.0 - max.0);
}
if p.1 < min.1 {
dist += (min.1 - p.1) * (min.1 - p.1);
} else if p.1 > max.1 {
dist += (p.1 - max.1) * (p.1 - max.1);
}
if p.2 < min.2 {
dist += (min.2 - p.2) * (min.2 - p.2);
} else if p.2 > max.2 {
dist += (p.2 - max.2) * (p.2 - max.2);
}
dist
}
fn intersect(b: &Bot, min: &Point, max: &Point) -> bool {
let dist = sq_dist(&b.position, min, max);
dist <= b.radius * b.radius
}
fn idk(bots: &Vec<Bot>, min: &Point, max: &Point) -> i64 {
let mut count = 0;
let mut min_dist = std::i64::MAX;
for bot in bots {
if intersect(bot, min, max) {
count += 1;
let dist = distance((0, 0, 0), bot.position);
if dist < min_dist {
min_dist = dist;
}
}
}
count
}
fn main() {
let re = Regex::new(r"^pos=<([-\d]+),([-\d]+),([-\d]+)>, r=(\d+)$").unwrap();
let mut bots = Vec::new();
let mut min = (std::i64::MAX, std::i64::MAX, std::i64::MAX);
let mut max = (std::i64::MIN, std::i64::MIN, std::i64::MIN);
for line in io::stdin().lock().lines() {
let line = line.unwrap();
if let Some(input) = re.captures(&line) {
let bot = Bot {
position: (
input[1].parse().unwrap(),
input[2].parse().unwrap(),
input[3].parse().unwrap(),
),
radius: input[4].parse().unwrap(),
};
if bot.position.0 < min.0 {
min.0 = bot.position.0;
}
if bot.position.1 < min.1 {
min.1 = bot.position.1;
}
if bot.position.2 < min.2 {
min.2 = bot.position.2;
}
if bot.position.0 > max.0 {
max.0 = bot.position.0;
}
if bot.position.1 > max.1 {
max.1 = bot.position.1;
}
if bot.position.2 > max.2 {
max.2 = bot.position.2;
}
bots.push(bot);
}
}
let max_bot = bots.iter().max().unwrap();
let count = bots.iter().filter(|&bot| max_bot.in_range(bot)).count();
println!("part 1: {}", count);
let mut queue = BinaryHeap::new();
queue.push(Node::new(min, max, bots.len() as i64));
while !queue.is_empty() {
let node = queue.pop().unwrap();
println!("{:?}", node);
if node.max.0 - node.min.0 == 1
&& node.max.1 - node.min.1 == 1
&& node.max.2 - node.min.2 == 1
{
min = node.min;
break;
}
let half = (
((node.max.0 + node.min.0) as f64 / 2.0).ceil() as i64,
((node.max.1 + node.min.1) as f64 / 2.0).ceil() as i64,
((node.max.2 + node.min.2) as f64 / 2.0).ceil() as i64,
);
for (min, max) in vec![
(
(node.min.0, node.min.1, node.min.2),
(half.0, half.1, half.2),
),
(
(node.min.0, node.min.1, half.2),
(half.0, half.1, node.max.2),
),
(
(node.min.0, half.1, node.min.2),
(half.0, node.max.1, half.2),
),
(
(node.min.0, half.1, half.2),
(half.0, node.max.1, node.max.2),
),
(
(half.0, node.min.1, node.min.2),
(node.max.0, half.1, half.2),
),
(
(half.0, node.min.1, half.2),
(node.max.0, half.1, node.max.2),
),
(
(half.0, half.1, node.min.2),
(node.max.0, node.max.1, half.2),
),
(
(half.0, half.1, half.2),
(node.max.0, node.max.1, node.max.2),
),
] {
queue.push(Node::new(min, max, idk(&bots, &min, &max)));
}
}
println!("part 2: {}", distance((0, 0, 0), min));
}