aoc - heh


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#![allow(
    unexpected_cfgs,
    confusable_idents,
    uncommon_codepoints,
    non_upper_case_globals,
    internal_features,
    mixed_script_confusables,
    static_mut_refs,
    incomplete_features,
    unused_imports,
    unsafe_op_in_unsafe_fn,
    redundant_semicolons
)]
#![feature(
    iterator_try_reduce,
    cmp_minmax,
    custom_inner_attributes,
    extend_one,
    slice_as_array,
    stdarch_x86_avx512,
    impl_trait_in_bindings,
    iter_partition_in_place,
    iter_chain,
    slice_swap_unchecked,
    generic_const_exprs,
    iter_array_chunks,
    slice_from_ptr_range,
    if_let_guard,
    once_cell_get_mut,
    iter_collect_into,
    let_chains,
    anonymous_lifetime_in_impl_trait,
    array_windows,
    vec_into_raw_parts,
    try_blocks,
    portable_simd,
    test,
    slice_as_chunks,
    array_chunks,
    slice_split_once,
    import_trait_associated_functions,
    core_intrinsics
)]
extern crate test;
pub mod util;

use atools::prelude::*;
use collar::CollectArray;
use lower::apply;
use memchr::memmem;
use regex::bytes::Regex;
use std::{
    cmp::{Reverse, minmax},
    mem::take,
    simd::prelude::*,
};
pub use util::prelude::*;

#[allow(warnings)]
type u32x3 = Simd<u32, 3>;

#[unsafe(no_mangle)]
#[implicit_fn::implicit_fn]
pub unsafe fn p1(x: &'static str) -> impl Display {
    let x = x.行().collect::<Vec<_>>();
    let mut ptr = 0i32;
    let mut regis =
        HashMap::<&[u8], i32>::from_iter([(&b"a"[..], 0), (b"b", 0), (b"c", 1), (b"d", 0)]);
    while let Some(i) = x.get(ptr as usize) {
        let i = i.μₙ(b' ').collect::<Vec<_>>();
        let p = |j: usize| i[j].str().parse::<i32>().unwrap_or_else(|_| regis[i[j]]);
        match i[0] {
            b"cpy" => *regis.get_mut(i[2]).unwrap() = p(1),
            b"inc" => *regis.get_mut(i[1]).unwrap() += 1,
            b"dec" => *regis.get_mut(i[1]).unwrap() -= 1,
            b"jnz" if p(1) != 0 => {
                ptr += p(2);
                continue;
            }
            _ => (),
        }
        ptr += 1;
    }

    regis[&b"a"[..]]
}

fn main() {
    unsafe { println!("{}", p1(include_str!("inp.txt"))) };
}

#[bench]
fn benc(b: &mut test::Bencher) {
    let i = boxd(include_str!("inp.txt"));
    b.iter(|| unsafe { p1(i) });
}