2019: day07: part 1
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@ -6,6 +6,7 @@ use aoc2019::day03;
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use aoc2019::day04;
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use aoc2019::day05;
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use aoc2019::day06;
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use aoc2019::day07;
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fn aoc2019_all(c: &mut Criterion) {
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c.bench_function("day01", |b| b.iter(|| day01::run().unwrap()));
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@ -14,6 +15,7 @@ fn aoc2019_all(c: &mut Criterion) {
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c.bench_function("day04", |b| b.iter(|| day04::run().unwrap()));
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c.bench_function("day05", |b| b.iter(|| day05::run().unwrap()));
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c.bench_function("day06", |b| b.iter(|| day06::run().unwrap()));
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c.bench_function("day07", |b| b.iter(|| day07::run().unwrap()));
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}
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criterion_group! {
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1
aoc2019/input/day07.txt
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1
aoc2019/input/day07.txt
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@ -0,0 +1 @@
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3,8,1001,8,10,8,105,1,0,0,21,46,67,88,101,126,207,288,369,450,99999,3,9,1001,9,5,9,1002,9,5,9,1001,9,5,9,102,3,9,9,101,2,9,9,4,9,99,3,9,102,4,9,9,101,5,9,9,102,5,9,9,101,3,9,9,4,9,99,3,9,1001,9,3,9,102,2,9,9,1001,9,5,9,102,4,9,9,4,9,99,3,9,102,3,9,9,1001,9,4,9,4,9,99,3,9,102,3,9,9,1001,9,3,9,1002,9,2,9,101,4,9,9,102,3,9,9,4,9,99,3,9,101,2,9,9,4,9,3,9,101,2,9,9,4,9,3,9,101,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,1002,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,101,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,101,1,9,9,4,9,99,3,9,101,1,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,1001,9,1,9,4,9,3,9,1002,9,2,9,4,9,99,3,9,101,1,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,1001,9,1,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,1,9,4,9,99,3,9,101,2,9,9,4,9,3,9,101,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,101,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,101,1,9,9,4,9,3,9,101,1,9,9,4,9,99,3,9,101,1,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,99
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90
aoc2019/src/day07.rs
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90
aoc2019/src/day07.rs
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@ -0,0 +1,90 @@
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use std::collections::VecDeque;
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use std::fmt::Write;
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use aoc::err;
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use aoc::Result;
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use crate::intcode::{parse_memory, Intcode};
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const INPUT: &str = include_str!("../input/day07.txt");
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pub fn run() -> Result<String> {
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let mut res = String::with_capacity(128);
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writeln!(res, "part 1: {}", part1(INPUT)?)?;
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Ok(res)
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}
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fn permutations_rec(used: &mut Vec<i64>, available: &mut VecDeque<i64>, res: &mut Vec<Vec<i64>>) {
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if available.is_empty() {
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res.push(used.clone());
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} else {
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for _ in 0..available.len() {
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used.push(available.pop_front().unwrap());
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permutations_rec(used, available, res);
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available.push_back(used.pop().unwrap());
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}
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}
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}
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fn permutations(array: &[i64]) -> Vec<Vec<i64>> {
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let mut res = Vec::new();
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permutations_rec(
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&mut Vec::new(),
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&mut VecDeque::from(array.to_vec()),
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&mut res,
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);
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res
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}
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fn part1(input: &str) -> Result<i64> {
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let memory = parse_memory(input)?;
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let combinations = permutations(&[0, 1, 2, 3, 4]);
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let mut res = 0;
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for combination in combinations {
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let mut output = 0;
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for phase in combination.iter() {
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let mut intcode = Intcode::with_memory(memory.clone());
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intcode.add_input(*phase);
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intcode.add_input(output);
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intcode.run()?;
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output = intcode
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.get_day05_output()
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.ok_or_else(|| err!("no output at end of pipeline!"))?;
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}
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res = std::cmp::max(res, output);
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}
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Ok(res)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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const PROVIDED1: &str = "3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0";
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const PROVIDED2: &str =
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"3,23,3,24,1002,24,10,24,1002,23,-1,23,101,5,23,23,1,24,23,23,4,23,99,0,0";
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const PROVIDED3: &str = "3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0";
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#[test]
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fn part1_provided() {
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assert_eq!(part1(PROVIDED1).unwrap(), 43210);
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assert_eq!(part1(PROVIDED2).unwrap(), 54321);
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assert_eq!(part1(PROVIDED3).unwrap(), 65210);
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}
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#[test]
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fn part1_real() {
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assert_eq!(part1(INPUT).unwrap(), 844468);
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}
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}
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@ -6,3 +6,4 @@ pub mod day03;
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pub mod day04;
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pub mod day05;
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pub mod day06;
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pub mod day07;
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@ -7,6 +7,7 @@ use aoc2019::day03;
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use aoc2019::day04;
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use aoc2019::day05;
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use aoc2019::day06;
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use aoc2019::day07;
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fn main() -> Result<()> {
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let days: &[DayFunc] = &[
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@ -16,6 +17,7 @@ fn main() -> Result<()> {
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day04::run,
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day05::run,
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day06::run,
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day07::run,
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];
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aoc::run(days)
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