結果
問題 | No.1901 bitwise xor convolution (characteristic 2) |
ユーザー | koba-e964 |
提出日時 | 2023-03-27 23:22:48 |
言語 | Rust (1.77.0 + proconio) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,484 bytes |
コンパイル時間 | 13,076 ms |
コンパイル使用メモリ | 402,704 KB |
実行使用メモリ | 110,068 KB |
最終ジャッジ日時 | 2024-09-19 17:35:20 |
合計ジャッジ時間 | 23,582 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
6,816 KB |
testcase_01 | AC | 1 ms
6,816 KB |
testcase_02 | WA | - |
testcase_03 | AC | 1 ms
6,940 KB |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
ソースコード
#[allow(unused_imports)] use std::cmp::*; #[allow(unused_imports)] use std::collections::*; use std::io::{Write, BufWriter}; // https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { ($($r:tt)*) => { let stdin = std::io::stdin(); let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock())); let mut next = move || -> String{ bytes.by_ref().map(|r|r.unwrap() as char) .skip_while(|c|c.is_whitespace()) .take_while(|c|!c.is_whitespace()) .collect() }; input_inner!{next, $($r)*} }; } macro_rules! input_inner { ($next:expr) => {}; ($next:expr,) => {}; ($next:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($next, $t); input_inner!{$next $($r)*} }; } macro_rules! read_value { ($next:expr, ( $($t:tt),* )) => { ($(read_value!($next, $t)),*) }; ($next:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>() }; ($next:expr, chars) => { read_value!($next, String).chars().collect::<Vec<char>>() }; ($next:expr, usize1) => (read_value!($next, usize) - 1); ($next:expr, [ $t:tt ]) => {{ let len = read_value!($next, usize); read_value!($next, [$t; len]) }}; ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error")); } trait Change { fn chmax(&mut self, x: Self); fn chmin(&mut self, x: Self); } impl<T: PartialOrd> Change for T { fn chmax(&mut self, x: T) { if *self < x { *self = x; } } fn chmin(&mut self, x: T) { if *self > x { *self = x; } } } #[cfg(x86_64)] fn bit_conv(a: u32, b: u32) -> u64 { use std::arch::x86_64::*; unsafe { let a = _mm_set_epi32(0, 0, 0, a as i32); let b = _mm_set_epi32(0, 0, 0, b as i32); let prod = _mm_clmulepi64_si128(a, b, 0); (_mm_extract_epi32(prod, 1) as u32 as u64) << 32 | _mm_extract_epi32(prod, 0) as u32 as u64 } } #[cfg(not(x86_64))] fn bit_conv(a: u32, b: u32) -> u64 { let mut res = 0; for i in 0..32 { if (a & 1 << i) != 0 { res ^= (b as u64) << i; } } res } // https://yukicoder.me/problems/no/1901 (4) // アダマール変換 -> 点ごとの積 -> アダマール変換 -> 2^n で割る をすればよく、 // そのために各点で n+1 整数係数の 32 次未満・64 次未満の多項式を持ちたい。 // これは 32bit 整数・64bit 整数を n+1 個持つ方針でできる。 // 計算量は O(2^n n^2)、ただし _mm_clmulepi64_si128 を 2^n (n^2/2 + O(n)) 回呼ぶ。 fn main() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););} #[allow(unused)] macro_rules! putvec { ($v:expr) => { for i in 0..$v.len() { puts!("{}{}", $v[i], if i + 1 == $v.len() {"\n"} else {" "}); } } } input! { n: usize, a: [[i32; 32]; 1 << n], b: [[i32; 32]; 1 << n], } let mut x = vec![[0u32; 32]; 1 << n]; let mut y = vec![[0u32; 32]; 1 << n]; for i in 0..1 << n { for j in 0..32 { if a[i][j] == 1 { x[i][j] = 1; } } for j in 0..32 { if b[i][j] == 1 { y[i][j] = 1; } } } for i in 0..n { for bits in 0..1 << n { if (bits & 1 << i) != 0 { continue; } for u in 0..32 { let p = x[bits][u]; let q = x[bits | 1 << i][u]; x[bits][u] = p.wrapping_add(q); x[bits | 1 << i][u] = p.wrapping_sub(q); let p = y[bits][u]; let q = y[bits | 1 << i][u]; y[bits][u] = p.wrapping_add(q); y[bits | 1 << i][u] = p.wrapping_sub(q); } } } let mut prod = vec![[0u32; 63]; 1 << n]; for bits in 0..1 << n { let mut p = vec![0u32; n + 1]; let mut q = vec![0u32; n + 1]; for i in 0..n + 1 { for j in 0..32 { if (x[bits][j] & 1 << i) != 0 { p[i] |= 1 << j; } if (y[bits][j] & 1 << i) != 0 { q[i] |= 1 << j; } } } let mut res = vec![0u64; n + 1]; for i in 0..n + 1 { let mut carry = 0u64; for j in 0..n + 1 - i { let tmp = bit_conv(p[i], q[j]); let me = res[i + j] ^ carry ^ tmp; carry = (res[i + j] & carry) | (carry & tmp) | (res[i + j] & tmp); res[i + j] = me; } } for i in 0..n + 1 { for j in 0..63 { if (res[i] & 1 << j) != 0 { prod[bits][j] |= 1 << i; } } } } for i in 0..n { for bits in 0..1 << n { if (bits & 1 << i) != 0 { continue; } for u in 0..63 { let p = prod[bits][u]; let q = prod[bits | 1 << i][u]; prod[bits][u] = p.wrapping_add(q); prod[bits | 1 << i][u] = p.wrapping_sub(q); } } } for v in &mut prod { for j in 0..63 { v[j] = (v[j] >> n) & 1; } putvec!(v); } }