#![allow(
    overflowing_literals,
    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(
    const_cmp,
    int_roundings,
    type_alias_impl_trait,
    iter_from_coroutine,
    iterator_try_reduce,
    step_trait,
    cmp_minmax,
    custom_inner_attributes,
    pattern_types,
    pattern_type_macro,
    extend_one,
    impl_trait_in_bindings,
    coroutines,
    stmt_expr_attributes,
    pattern_type_range_trait,
    const_trait_impl,
    coroutine_trait,
    iter_partition_in_place,
    slice_swap_unchecked,
    generic_const_exprs,
    iter_array_chunks,
    slice_from_ptr_range,
    if_let_guard,
    once_cell_get_mut,
    iter_collect_into,
    anonymous_lifetime_in_impl_trait,
    array_windows,
    try_blocks,
    portable_simd,
    test,
    slice_split_once,
    import_trait_associated_functions,
    core_intrinsics,
    gen_blocks
)]
extern crate test;
pub mod util;

use atools::Split;
// pub use atools::prelude::*;
use lower::apply;
use memchr::memmem;
use regex::bytes::Regex;
use rustc_hash::FxBuildHasher;
use std::{
    arch::x86_64::*,
    cmp::{Reverse, minmax},
    hash::Hash,
    hint::{assert_unchecked, unreachable_unchecked},
    mem::take,
    ops::{Coroutine, Deref, RangeInclusive},
    pin::Pin,
    simd::prelude::*,
    sync::atomic::{AtomicUsize, Ordering},
    time::{Duration, Instant},
};
use swizzle::array;
pub use util::prelude::*;
mod rah;
use atools::prelude::*;

use crate::util::UnionFind;
#[unsafe(no_mangle)]
#[implicit_fn::implicit_fn]
pub unsafe fn p1(x: &'static [u8]) -> impl Debug {
    let v = util::uints::<i64>(x).array_chunks::<3>().collect_vec();
    let k = v
        .iter()
        .copied()
        .ι::<usize>()
        .array_combinations::<2>()
        .sorted_by_key(|[(a, _), (b, _)]| {
            ((a[0] - b[0]).pow(2) + (a[1] - b[1]).pow(2) + (a[2] - b[2]).pow(2)).isqrt()
        });
    let mut uf = UnionFind::new(1000);
    for [a, b] in k.into_iter() {
        uf.union(a.1, b.1);
        // if (0..1000).map(|n| uf.find(n)).all_equal() {
        //     return v[a.1][0] * v[b.1][0];
        // }
    }

    (0..1000)
        .map(|x| uf.group_size(x))
        .sorted()
        .rev()
        .take(3)
        .product::<usize>()
}

unsafe fn p2(x: &[u8]) -> i64 {
    fn sq(p1: [i64; 3], p2: [i64; 3]) -> i64 {
        (p1[0] - p2[0]).pow(2) + (p1[1] - p2[1]).pow(2) + (p1[2] - p2[2]).pow(2)
    }

    let mut p = x.as_ptr();
    let end = p.add(x.len());

    static mut points: [[i32; 1000]; 3] = [[0; 1000]; 3];
    let mut i = 0;
    while p != end {
        let mut f = |til| {
            let mut rest = 0;
            while let x = p.λ()
                && x != til
            {
                rest *= 10;
                rest += (x - b'0') as i32;
            }
            rest
        };
        let x = f(b',');
        let y = f(b',');
        let z = f(b'\n');
        (points[0][i], points[1][i], points[2][i]) = (x, y, z);
        i += 1;
    }
    (0..1000)
        .map(|i| {
            let former = from_fn(|j| points[j][i] as i64);
            let (dist, retval) = (0..1000)
                .filter(|j| i != *j)
                .filter_map(|j| {
                    let d = sq(former, from_fn(|i| points[i][j] as i64)) as i64;
                    Some((d, points[0][i] as i64 * points[0][j] as i64))
                })
                .min_by_key(|&(d, _)| d)
                .unwrap_or((i64::MAX, 0));
            (dist, retval)
        })
        .fold((0, -1i64), |(best, mxd), (rmin, set)| {
            if rmin > mxd { (set, rmin) } else { (best, mxd) }
        })
        .0
}
const ISIZE: usize = include_bytes!("inp.txt").len();
fn main() {
    use atools::prelude::*;
    unsafe { println!("{:?}", p2(include_bytes!("inp.txt"))) };
    unsafe { println!("{:?}", p2(include_bytes!("../1"))) }; // 8141888143
    unsafe { println!("{:?}", p2(include_bytes!("../2"))) }; // 83173 * 97891
    unsafe { println!("{:?}", p2(include_bytes!("../3"))) }; // 8465902405
}

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