heh
bendn 2024-12-02
parent d524e50 · commit e44fbad
-rw-r--r--Cargo.toml2
-rw-r--r--src/inp.txt2000
-rw-r--r--src/main.rs168
-rw-r--r--src/util.rs4
4 files changed, 1112 insertions, 1062 deletions
diff --git a/Cargo.toml b/Cargo.toml
index 4cfdf4e..a695c3f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ atools = "0.1.5"
hinted = "0.0.1"
itertools = "0.12.0"
memchr = "2.6.4"
-radsort = "0.1.1"
+# radsort = "0.1.1"
rustc-hash = { version = "2.1.0", features = ["nightly"] }
[profile.release]
lto = true
diff --git a/src/inp.txt b/src/inp.txt
index 86c469c..cd46e29 100644
--- a/src/inp.txt
+++ b/src/inp.txt
@@ -1,1000 +1,1000 @@
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+17 20 22 25 28 29
+44 42 39 36 34 31 30 29
+27 24 21 20 19 17
+32 30 29 28 26 24 21 19
+44 45 48 50 53 54 56
+89 86 83 81 80 78 75 72
+70 67 64 63 62 60
+52 53 54 57 59
+27 29 32 33 36 39 40 42
+32 34 35 36 39 42 45 48
+61 64 66 68 71 72 74
+33 30 28 27 24 23 20
+31 29 27 24 21 19
+21 20 19 17 15 12
+42 44 47 50 53 55 56
+77 79 80 83 86 87 88 91
+37 36 33 31 30 28 27 24
+13 16 19 22 25 26 29
+35 34 33 32 29 27 25
+50 52 53 56 57 59
+77 74 72 70 69 68 65
+88 91 92 93 96
+76 78 81 82 83
+64 66 68 69 70 73 74 75
+68 67 66 65 62 60 58
+57 56 55 52 50 48 46
+61 59 58 56 53
+15 12 9 6 5 3
+70 68 66 64 61 60 57 54
+75 78 81 83 84 85 87
+24 26 27 29 30 31 34 36
+53 56 59 60 63 66
+1 3 5 7 8 9
+89 87 84 82 79 78 76 75
+30 27 25 22 21
+37 36 34 31 30 29
+19 18 15 12 11 8 7 6
+60 58 55 54 52 50 48
+7 8 9 12 15 17
+89 90 93 94 96
+27 24 23 22 21 19 17 16
+22 20 19 18 15 14 12
+85 86 88 90 92 95 96
+38 39 40 42 45
+24 25 28 31 33 34
+70 69 68 67 65 63 62
+15 13 12 9 7 4 2
+49 48 45 42 41
+57 60 62 63 66 68
+31 34 37 38 40
+27 28 29 30 33 36
+36 34 31 30 29 28 27
+53 51 49 46 43
+95 92 90 88 85 83
+74 73 72 70 67 64
+23 20 17 16 14 13
+95 92 89 87 85 82 81 79
+36 35 34 32 31 30 29
+50 52 54 57 60 63 64
+58 61 62 63 64 65 68 70
+39 40 42 43 45 48 51
+85 84 81 79 77 74
+45 46 47 49 52
+15 16 17 20 21 22
+86 83 80 78 76 73 70 68
+51 54 57 59 62
+71 73 76 77 79 80
+68 69 72 74 77 78 79 81
+13 11 8 6 5 3
+50 52 53 56 57 59 60
+60 62 64 66 69
+80 83 84 86 88
+8 10 11 14 16
+43 46 47 50 53 56
+55 54 51 50 48 45 43
+66 68 71 74 75
+84 86 87 88 90 93
+38 37 36 33 30 27 26
+29 31 34 37 39
+12 10 9 6 4
+72 69 67 65 63 62
+23 25 26 29 30 32
+70 71 74 77 80 81 84 87
diff --git a/src/main.rs b/src/main.rs
index 1e553a3..27253fd 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -27,72 +27,122 @@
extern crate test;
pub mod util;
use atools::prelude::*;
-use hinted::HintExt;
+// use hinted::HintExt;
pub use util::prelude::*;
-fn p1(i: &str) -> impl Display {
- static mut a: [i32; 1000] = [0; 1000];
- static mut b: [i32; 1000] = [0; 1000];
- let i = i.as_bytes();
- unsafe {
- for n in 0..1000 {
- let i = C! { &i[n * 14..] };
- let n1 = reading::八(
- u64::from_le_bytes(util::nail(C! { &i[..8] })) << 24 | (0x3030303030303030 & !24),
- ) as i32;
- let n2 = reading::八(u64::from_le_bytes(util::nail(C! { &i[5..]}))) as i32;
-
- *a.get_unchecked_mut(n) = n1;
- *b.get_unchecked_mut(n) = n2;
+// 3rd iteration https://godbolt.org/z/bz8qraE56
+fn check(x: &[i8]) -> bool {
+ let mut array = [0i8; 7];
+ let mut set = 0xffu8;
+ let n = x.array_windows::<2>().map(|[a, b]| a - b).ν(&mut array);
+ let array = &array[..n];
+ match array[0] {
+ i8::MIN..=-1 => {
+ array
+ .iter()
+ .zip(0..8u8)
+ .map(|(x, index)| !(-3..=-1).contains(x) as u8 * (1 << index))
+ .for_each(|x| set &= !x);
+ }
+ 1.. => {
+ array
+ .iter()
+ .zip(0..8u8)
+ .map(|(x, index)| !(1..=3).contains(x) as u8 * (1 << index))
+ .for_each(|x| set &= !x);
}
- radsort::sort(&mut a);
- radsort::sort(&mut b);
- a.iter()
- .copied()
- .zip(b)
- .map(|(x, y)| (x - y).abs())
- .sum::<i32>()
+ 0 => return false,
}
+ set.count_zeros() == 0
}
pub fn run(i: &str) -> impl Display {
- static mut a: [u32; 1000] = [0; 1000];
- static mut map: [u32; 100000] = [0; 100000];
- let i = i.as_bytes();
-
- unsafe {
- let x = C! { &i[..14] };
- let (x, y) = (reading::all(&x[0..5]), reading::all::<u32>(&x[8..13]));
- *a.get_unchecked_mut(0) = x;
- *map.get_unchecked_mut(y as usize) += 1;
+ let mut items = [0; 8];
+ i.行()
+ .filter(|x| {
+ let mut len = 0;
+ let mut s = 0;
+ for &b in *x {
+ match b {
+ b' ' => {
+ C! { items[len] = s as i8 };
+ len += 1;
+ s = 0;
+ }
+ b => s = s * 10 + (b - b'0'),
+ }
+ }
+ C! { items[len] = s as i8 };
+ let slice = C! { &items[..len + 1] };
+ check(slice)
+ // (0..items.len()).any(|n| {
+ // let mut items = items.clone();
+ // items.remove(n);
+ // check2(&items)
+ // })
+ })
+ .count()
+}
- for n in 1..1000 {
- let x = util::reading::八(
- u64::from_le_bytes(util::nail::<8>(i.get_unchecked(n * 14 - 3..)))
- & 0xffffffffff000000,
- );
- let y = util::reading::八(u64::from_le_bytes(util::nail::<8>(
- i.get_unchecked(n * 14 + 5..),
- )));
- *a.get_unchecked_mut(n) = x as u32;
- *map.get_unchecked_mut(y as usize) += 1;
+fn check_pof(x: &[i8]) -> Result<(), u8> {
+ let state = match x.first_chunk::<2>().map(|[a, b]| a.cmp(b)).ψ() {
+ Equal => return Err(0),
+ Greater => false,
+ Less => true,
+ };
+ // windows at home 😔
+ for i in 1..x.len() as u8 - 1 {
+ let [a, b] = util::nail(C! { &x[i as usize..=i as usize ] });
+ match state {
+ true if !(1..=3).contains(&(b - a)) => return Err(i),
+ false if !(1..=3).contains(&(a - b)) => return Err(i),
+ _ => (),
}
- a.iter()
- .copied()
- .map(|x| x * map.get_unchecked(x as usize))
- .sum::<u32>()
}
+ Ok(())
+}
+#[no_mangle]
+pub fn p2(i: &str) -> impl Display {
+ let mut items = [0; 8];
- // let (mut a, b) = i
- // .行()
- // .map(|x| x.κ::<u32>().carr().tuple())
- // .collect::<(Vec<_>, Vec<u32>)>();
- // let mut map = HashMap::<u32, u32>::default();
- // for elem in b {
- // map.entry(elem).and_modify(|x| *x += 1).or_insert(1);
- // }
- // a.sort_unstable();
- // a.iter().map(|x| x * map.get(x).unwrap_or(&0)).sum::<u32>()
+ i.行()
+ .filter(|x| {
+ let mut len = 0;
+ let mut s = 0;
+ for &b in *x {
+ match b {
+ b' ' => {
+ C! { items[len] = s as i8 };
+ len += 1;
+ s = 0;
+ }
+ b => {
+ s = s * 10 + (b - b'0');
+ }
+ }
+ }
+ C! { items[len] = s as i8 };
+ let slice = C! { &items[..len + 1] };
+ match check_pof(slice) {
+ Ok(()) => true,
+ Err(i) => {
+ let i = i as usize;
+ let mut place = [0i8; 7];
+ macro_rules! rmv {
+ ($i:expr, $si: expr) => {{
+ place[..$i].copy_from_slice(&slice[..$i]);
+ let put = &slice[$si..];
+ place[$i..$i + put.len()].copy_from_slice(put);
+ &place[..slice.len() - 1]
+ }};
+ }
+ check(rmv!(i, i + 1)) // [1, 2, >i<, 4, 5]
+ || check(rmv!(i + 1, i + 2)) // [1, 2, i, >4<, 5]
+ || (i > 0 && check(rmv!(i - 1, i))) // [1, >2<, i, 4, 5]
+ }
+ }
+ })
+ .count()
}
fn main() {
@@ -102,9 +152,9 @@ fn main() {
// s.push_str(i);
// }
// std::fs::write("src/inp.txt", s);
- println!("{}", p1(i));
- // println!("{}", experiment(i));
+ // println!("{}", p1(i));
println!("{}", run(i));
+ println!("{}", p2(i));
}
#[bench]
@@ -114,7 +164,7 @@ fn bench(b: &mut test::Bencher) {
}
#[bench]
-fn bench2(b: &mut test::Bencher) {
+fn p21(b: &mut test::Bencher) {
let i = boxd(include_str!("inp.txt").trim());
- b.iter(|| p1(i));
+ b.iter(|| p2(i));
}
diff --git a/src/util.rs b/src/util.rs
index ad87491..8222f75 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -894,8 +894,8 @@ macro_rules! ι {
ι!(u64);
ι!(usize);
-pub fn nail<const N: usize>(x: &[u8]) -> [u8; N] {
- unsafe { (x.as_ptr() as *const [u8; N]).read() }
+pub fn nail<const N: usize, T: Copy>(x: &[T]) -> [T; N] {
+ unsafe { (x.as_ptr() as *const [T; N]).read() }
}
pub mod reading {