結果

問題 No.670 log は定数
ユーザー koba-e964koba-e964
提出日時 2020-10-15 23:51:32
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 1,980 ms / 4,000 ms
コード長 4,321 bytes
コンパイル時間 14,275 ms
コンパイル使用メモリ 378,740 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-07-20 20:08:54
合計ジャッジ時間 36,688 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 10
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#[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());
}
trait Bisect<T> {
fn lower_bound(&self, val: &T) -> usize;
fn upper_bound(&self, val: &T) -> usize;
}
impl<T: Ord> Bisect<T> for [T] {
fn lower_bound(&self, val: &T) -> usize {
let mut pass = self.len() + 1;
let mut fail = 0;
while pass - fail > 1 {
let mid = (pass + fail) / 2;
if &self[mid - 1] >= val {
pass = mid;
} else {
fail = mid;
}
}
pass - 1
}
fn upper_bound(&self, val: &T) -> usize {
let mut pass = self.len() + 1;
let mut fail = 0;
while pass - fail > 1 {
let mid = (pass + fail) / 2;
if &self[mid - 1] > val {
pass = mid;
} else {
fail = mid;
}
}
pass - 1
}
}
fn solve() {
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, q: usize, seed: u64,
}
let mut seed = seed;
let mut next = move || {
seed = seed ^ seed.wrapping_shl(13);
seed = seed ^ (seed >> 7);
seed = seed ^ seed.wrapping_shl(17);
seed >> 33
};
let mut a = vec![0; n];
for _ in 0..10000 {
next();
}
for i in 0..n {
a[i] = next();
}
a.sort();
const W: usize = 1 << 15;
const B: usize = 16;
let mut precomp = vec![0; W + 1];
for i in 0..W as u64 + 1 {
let l = i << B;
let idx = a.lower_bound(&l);
precomp[i as usize] = idx;
}
let mut tot: i64 = 0;
for i in 0..q {
let x = next();
let hi = (x >> B) as usize;
let l = precomp[hi];
let r = precomp[hi + 1];
let idx = a[l..r].lower_bound(&x) + l;
tot ^= idx as i64 * i as i64;
}
puts!("{}\n", tot);
}
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();
}
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