結果

問題 No.2672 Subset Xor Sum
ユーザー ngtkanangtkana
提出日時 2024-03-02 04:49:10
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 16 ms / 2,000 ms
コード長 12,420 bytes
コンパイル時間 11,227 ms
コンパイル使用メモリ 379,252 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-09-30 04:10:41
合計ジャッジ時間 13,483 ms
ジャッジサーバーID
(参考情報)
judge4 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 2
other AC * 66
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

use input::input;
use input::input_vec;
use std::ops::BitXor;
fn main() {
let n = input::<usize>();
let a = input_vec::<u32>();
assert_eq!(a.len(), n);
let mut basis = Vec::new();
let mut kernel = 0;
for &(mut x) in &a {
for &y in &basis {
x = x.min(x ^ y);
}
if x == 0 {
kernel += 1;
if kernel == 2 {
break;
}
} else {
basis.push(x);
}
}
let is_ok = a.iter().copied().fold(0, <u32 as BitXor>::bitxor) == 0 && kernel == 2;
println!("{}", if is_ok { "Yes" } else { "No" });
}
// input {{{
#[allow(dead_code)]
mod input {
use std::cell::Cell;
use std::convert::TryFrom;
use std::io::stdin;
use std::io::BufRead;
use std::io::BufReader;
use std::io::Lines;
use std::io::Stdin;
use std::str::FromStr;
use std::sync::Mutex;
use std::sync::Once;
type Server = Mutex<Lines<BufReader<Stdin>>>;
static ONCE: Once = Once::new();
pub struct Lazy(Cell<Option<Server>>);
unsafe impl Sync for Lazy {}
fn line() -> String {
static SYNCER: Lazy = Lazy(Cell::new(None));
ONCE.call_once(|| {
SYNCER
.0
.set(Some(Mutex::new(BufReader::new(stdin()).lines())));
});
unsafe {
(*SYNCER.0.as_ptr())
.as_ref()
.unwrap()
.lock()
.unwrap()
.next()
.unwrap()
.unwrap()
}
}
pub trait ForceFromStr: FromStr {
fn force_from_str(s: &str) -> Self;
}
impl<T, E> ForceFromStr for T
where
T: FromStr<Err = E>,
E: std::fmt::Debug,
{
fn force_from_str(s: &str) -> Self {
s.parse().unwrap()
}
}
pub fn input_array<T: ForceFromStr, const N: usize>() -> [T; N]
where
T: std::fmt::Debug,
{
<[_; N]>::try_from(input_vec()).unwrap()
}
pub fn input_vec<T: ForceFromStr>() -> Vec<T> {
line()
.split_whitespace()
.map(T::force_from_str)
.collect::<Vec<_>>()
}
pub fn input<T: ForceFromStr>() -> T {
T::force_from_str(&line())
}
}
// }}}
// lg {{{
#[allow(dead_code)]
mod lg {
use std::borrow::Borrow;
use std::fmt;
use std::iter::once;
#[macro_export]
macro_rules! lg {
(@contents $head:expr $(, $tail:expr)*) => {{
$crate::__lg_internal!($head);
$(
eprint!(",");
$crate::__lg_internal!($tail);
)*
eprintln!();
}};
($($expr:expr),* $(,)?) => {{
eprint!("{}ッ", line!());
$crate::lg!(@contents $($expr),*)
}};
}
#[doc(hidden)]
#[macro_export]
macro_rules! __lg_internal {
($value:expr) => {{
match $value {
head => {
eprint!(
" {} = {}",
stringify!($value),
$crate::lg::__quiet(format!("{:?}", &head))
);
}
}
}};
}
#[macro_export]
macro_rules! rows {
{
$index_label:literal,
$(@offset $offset:expr,)?
$(@verticalbar $verticalbar:expr,)*
$($(@$label:literal =>)? $values:expr),* $(,)?
} => {{
#![allow(unused_assignments)]
let mut rows = $crate::lg::Rows::default();
rows.line_number(line!());
$(rows.offset($offset);)?
$(rows.verticalbar($verticalbar);)*
rows.index_label($index_label);
$({
let mut label = stringify!($values).to_string();
if label.starts_with("&") {
label = label[1..].to_string();
}
$({
let label_: &'static str = $label;
label = label_.to_string();
})?
rows.row(label, $values);
})*
eprintln!("{}", rows.to_string_table());
}};
}
#[macro_export]
macro_rules! table {
{
$(@$name:literal => )? $values:expr $(,)?
} => {{
#![allow(unused_assignments)]
let mut name = stringify!($values).to_string();
if name.starts_with("&") {
name = name[1..].to_string();
}
$({
let name_: &'static str = $name;
name = name_.to_string();
})?
let mut rows = $crate::lg::Rows::default();
rows.line_number(line!());
rows.table_name(name);
#[allow(array_into_iter)]
for (i, row) in $values.into_iter().enumerate() {
rows.row(i.to_string(), row);
}
eprintln!("{}", rows.to_string_table());
}};
}
#[doc(hidden)]
pub fn __quiet(s: impl AsRef<str>) -> String {
s.as_ref()
.replace("340282366920938463463374607431768211455", "*") // u128
.replace("170141183460469231731687303715884105727", "*") // i128
.replace("18446744073709551615", "*") // u64
.replace("9223372036854775807", "*") // i64
.replace("-9223372036854775808", "*") // i64
.replace("4294967295", "*") // u32
.replace("2147483647", "*") // i32
.replace("-2147483648", "*") // i32
.replace("None", "*")
.replace("Some", "")
.replace("true", "#")
.replace("false", ".")
.replace(['"', '\''], "")
}
#[doc(hidden)]
#[derive(Default)]
pub struct Rows {
line_number: String,
index_label: String,
offset: usize,
verticalbars: Vec<usize>,
table_name: String,
rows: Vec<Row>,
}
impl Rows {
pub fn line_number(&mut self, line_number: u32) -> &mut Self {
self.line_number = format!("{}", line_number);
self
}
pub fn index_label(&mut self, index_label: impl Into<String>) -> &mut Self {
self.index_label = index_label.into();
self
}
pub fn offset(&mut self, offset: usize) -> &mut Self {
self.offset = offset;
self
}
pub fn verticalbar(&mut self, verticalbar: impl IntoIterator<Item = usize>) -> &mut Self {
self.verticalbars.extend(verticalbar);
self
}
pub fn table_name(&mut self, table_name: impl Into<String>) -> &mut Self {
self.table_name = table_name.into();
self
}
pub fn row(
&mut self,
label: impl Into<String>,
values: impl IntoIterator<Item = impl fmt::Debug>,
) -> &mut Self {
self.rows.push(Row {
label: label.into(),
values: values
.into_iter()
.map(|value| __quiet(format!("{:?}", value)))
.collect(),
});
self
}
pub fn to_string_table(self) -> StringTable {
let Self {
line_number,
index_label,
offset,
verticalbars,
table_name,
rows,
} = self;
let w = rows
.iter()
.map(|row| row.values.len())
.max()
.unwrap_or_default();
let mut verticalbar_count = vec![0; w + 1];
for &v in &verticalbars {
if (offset..=offset + w).contains(&v) {
verticalbar_count[v - offset] += 1;
}
}
StringTable {
head: StringRow {
label: format!(
"{line_number}ッ {table_name}{index_label}",
index_label = if index_label.is_empty() {
String::new()
} else {
format!("[{}]", index_label)
}
),
values: (offset..offset + w)
.map(|index| index.to_string())
.collect(),
},
body: rows
.iter()
.map(|row| StringRow {
label: row.label.clone(),
values: row.values.clone(),
})
.collect(),
verticalbar_count,
}
}
}
struct Row {
label: String,
values: Vec<String>,
}
#[doc(hidden)]
pub struct StringTable {
head: StringRow,
body: Vec<StringRow>,
verticalbar_count: Vec<usize>,
}
impl fmt::Display for StringTable {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let Self {
head,
body,
verticalbar_count,
} = self;
let w = body
.iter()
.map(|row| row.values.len())
.max()
.unwrap_or_default();
let label_width = once(head.label.chars().count())
.chain(body.iter().map(|row| row.label.chars().count()))
.max()
.unwrap();
let value_width = (0..w)
.map(|j| {
once(j.to_string().len())
.chain(
body.iter()
.map(|row| row.values.get(j).map_or(0, |s| s.chars().count())),
)
.max()
.unwrap()
})
.collect::<Vec<_>>();
// Heading
gray(f)?;
write!(
f,
"{}",
head.to_string(label_width, &value_width, verticalbar_count, true)
)?;
resetln(f)?;
// Body
for row in body {
write!(
f,
"{}",
row.to_string(label_width, &value_width, verticalbar_count, false)
)?;
writeln!(f)?;
}
Ok(())
}
}
struct StringRow {
label: String,
values: Vec<String>,
}
impl StringRow {
fn to_string(
&self,
label_width: usize,
value_width: &[usize],
varticalbars_count: &[usize],
label_align_left: bool,
) -> String {
let Self { label, values } = self;
let w = value_width.len();
let mut s = String::new();
s.push_str(&if label_align_left {
format!("{label:<label_width$} |")
} else {
format!("{label:^label_width$} |")
});
for j in 0..w {
let value_width = value_width[j];
s.push_str("|".repeat(varticalbars_count[j]).as_str());
if varticalbars_count[j] == 0 && j != 0 && value_width <= 1 {
s.push(' ');
}
match values.get(j) {
Some(value) => {
s.push_str(&format!(" {value:>value_width$}",));
}
None => {
s.push_str(" ".repeat(value_width + 1).as_str());
}
}
}
s
}
}
const GRAY: &str = "\x1b[48;2;127;127;127;37m";
const RESET: &str = "\x1b[0m";
fn gray(f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{GRAY}")
}
fn resetln(f: &mut fmt::Formatter<'_>) -> fmt::Result {
writeln!(f, "{RESET}")
}
pub fn bools<B, I>(iter: I) -> String
where
B: Borrow<bool>,
I: IntoIterator<Item = B>,
{
format!(
"[{}]",
iter.into_iter()
.map(|b| ['.', '#'][usize::from(*(b.borrow()))])
.collect::<String>(),
)
}
}
// }}}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0