結果
問題 | No.1240 Or Sum of Xor Pair |
ユーザー | koba-e964 |
提出日時 | 2020-10-01 17:01:47 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 289 ms / 2,000 ms |
コード長 | 3,709 bytes |
コンパイル時間 | 12,120 ms |
コンパイル使用メモリ | 406,664 KB |
実行使用メモリ | 7,736 KB |
最終ジャッジ日時 | 2024-07-07 01:24:19 |
合計ジャッジ時間 | 22,829 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 266 ms
6,812 KB |
testcase_01 | AC | 262 ms
6,940 KB |
testcase_02 | AC | 270 ms
6,944 KB |
testcase_03 | AC | 264 ms
6,944 KB |
testcase_04 | AC | 264 ms
6,944 KB |
testcase_05 | AC | 267 ms
6,940 KB |
testcase_06 | AC | 262 ms
6,940 KB |
testcase_07 | AC | 268 ms
6,944 KB |
testcase_08 | AC | 265 ms
6,940 KB |
testcase_09 | AC | 264 ms
6,944 KB |
testcase_10 | AC | 269 ms
6,944 KB |
testcase_11 | AC | 267 ms
6,940 KB |
testcase_12 | AC | 275 ms
6,944 KB |
testcase_13 | AC | 266 ms
6,944 KB |
testcase_14 | AC | 268 ms
6,940 KB |
testcase_15 | AC | 274 ms
7,612 KB |
testcase_16 | AC | 281 ms
7,736 KB |
testcase_17 | AC | 276 ms
7,608 KB |
testcase_18 | AC | 282 ms
7,604 KB |
testcase_19 | AC | 289 ms
7,736 KB |
testcase_20 | AC | 277 ms
7,552 KB |
testcase_21 | AC | 287 ms
7,608 KB |
testcase_22 | AC | 276 ms
7,604 KB |
testcase_23 | AC | 276 ms
7,608 KB |
testcase_24 | AC | 277 ms
7,600 KB |
testcase_25 | AC | 287 ms
7,604 KB |
testcase_26 | AC | 287 ms
7,604 KB |
testcase_27 | AC | 270 ms
6,940 KB |
testcase_28 | AC | 265 ms
6,948 KB |
testcase_29 | AC | 282 ms
6,940 KB |
testcase_30 | AC | 268 ms
6,944 KB |
testcase_31 | AC | 264 ms
6,940 KB |
testcase_32 | AC | 278 ms
7,120 KB |
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, [graph1; $len:expr]) => {{ let mut g = vec![vec![]; $len]; let ab = read_value!($next, [(usize1, usize1)]); for (a, b) in ab { g[a].push(b); g[b].push(a); } g }}; ($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::<$t>().expect("Parse error")); } #[allow(unused)] macro_rules! debug { ($($format:tt)*) => (write!(std::io::stderr(), $($format)*).unwrap()); } #[allow(unused)] macro_rules! debugln { ($($format:tt)*) => (writeln!(std::io::stderr(), $($format)*).unwrap()); } // 解説解。xor convolution const B: usize = 18; fn calc(mut cnt: Vec<i64>, x: usize) -> i64 { for i in 0..B { for b in 0..1 << B { if (b & 1 << i) != 0 { continue; } let x = cnt[b]; let y = cnt[b | 1 << i]; cnt[b] = x + y; cnt[b | 1 << i] = x - y; } } let cnt0 = cnt[0]; for b in 0..1 << B { cnt[b] = cnt[b] * cnt[b]; } for i in 0..B { for b in 0..1 << B { if (b & 1 << i) != 0 { continue; } let x = cnt[b]; let y = cnt[b | 1 << i]; cnt[b] = (x + y) / 2; cnt[b | 1 << i] = (x - y) / 2; } } let mut sum = 0; for i in 0..x { sum += cnt[i]; } (sum - cnt0) / 2 } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (let _ = write!(out,$($format)*);); } input! { n: usize, x: usize, a: [usize; n], } let mut cnt = vec![0i64; 1 << B]; for &a in &a { cnt[a] += 1; } let all = calc(cnt.clone(), x); let mut sum = 0; for i in 0..B { let mut cp = cnt.clone(); for bits in 0..1 << B { if (bits & 1 << i) != 0 { cp[bits] = 0; } } let del = calc(cp, x); sum += (all - del) << i; } puts!("{}\n", sum); } fn main() { // In order to avoid potential stack overflow, spawn a new thread. let stack_size = 104_857_600; // 100 MB let thd = std::thread::Builder::new().stack_size(stack_size); thd.spawn(|| solve()).unwrap().join().unwrap(); }