結果

問題 No.1701 half price
ユーザー manta1130
提出日時 2021-11-04 14:18:28
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 109 ms / 3,000 ms
コード長 5,307 bytes
コンパイル時間 12,410 ms
コンパイル使用メモリ 377,028 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-10-14 12:24:38
合計ジャッジ時間 13,809 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
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 * 20
権限があれば一括ダウンロードができます
コンパイルメッセージ
warning: unused variable: `n`
  --> src/main.rs:11:9
   |
11 |         n:usize,w:i64
   |         ^
   |
help: `n` is captured in macro and introduced a unused variable
  --> src/main.rs:69:17
   |
10 | /     inputv! {
11 | |         n:usize,w:i64
12 | |     }
   | |_____- in this macro invocation
...
69 |               let x:x: t = buf_split_result.parse().unwrap();
   |                   ^^
   = note: `#[warn(unused_variables)]` on by default
   = note: this warning originates in the macro `input_internal` which comes from the expansion of the macro `inputv` (in Nightly builds, run with -Z macro-backtrace for more info)

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::io::{stdout, BufWriter, Write};
use std::collections::HashSet;
fn main() {
let out = stdout();
let mut out = BufWriter::new(out.lock());
inputv! {
n:usize,w:i64
}
let a = input_vector::<i64>();
let mut set = HashSet::new();
let mut ans = 0;
for mut i in 0..3_usize.pow(a.len() as u32) {
let mut buf = 0;
let mut k = 0;
for j in 0..a.len() {
if i % 3 == 1 {
buf += a[j];
k = (k << 1) + 1;
} else if i % 3 == 2 {
buf += a[j] / 2;
k = (k << 1) + 1;
} else {
k <<= 1;
}
i /= 3;
}
if buf == w && !set.contains(&k) && k != 0 {
ans += 1;
set.insert(k);
}
}
writeln!(out, "{}", ans).unwrap();
}
//https://github.com/manta1130/competitive-template-rs
use input::*;
pub mod input {
use std::cell::RefCell;
use std::io;
pub const SPLIT_DELIMITER: char = ' ';
pub use std::io::prelude::*;
thread_local! {
pub static INPUT_BUFFER:RefCell<std::collections::VecDeque<String>>=RefCell::new(std::collections::VecDeque::new());
}
#[macro_export]
macro_rules! input_internal {
($x:ident : $t:ty) => {
INPUT_BUFFER.with(|p| {
if p.borrow().len() == 0 {
let temp_str = input_line_str();
let mut split_result_iter = temp_str
.split(SPLIT_DELIMITER)
.map(|q| q.to_string())
.collect::<std::collections::VecDeque<_>>();
p.borrow_mut().append(&mut split_result_iter)
}
});
let mut buf_split_result = String::new();
INPUT_BUFFER.with(|p| buf_split_result = p.borrow_mut().pop_front().unwrap());
let $x: $t = buf_split_result.parse().unwrap();
};
(mut $x:ident : $t:ty) => {
INPUT_BUFFER.with(|p| {
if p.borrow().len() == 0 {
let temp_str = input_line_str();
let mut split_result_iter = temp_str
.split(SPLIT_DELIMITER)
.map(|q| q.to_string())
.collect::<std::collections::VecDeque<_>>();
p.borrow_mut().append(&mut split_result_iter)
}
});
let mut buf_split_result = String::new();
INPUT_BUFFER.with(|p| buf_split_result = p.borrow_mut().pop_front().unwrap());
let mut $x: $t = buf_split_result.parse().unwrap();
};
}
pub fn input_buffer_is_empty() -> bool {
let mut empty = false;
INPUT_BUFFER.with(|p| {
if p.borrow().len() == 0 {
empty = true;
}
});
empty
}
#[macro_export]
macro_rules! inputv {
($i:ident : $t:ty) => {
input_internal!{$i : $t}
};
(mut $i:ident : $t:ty) => {
input_internal!{mut $i : $t}
};
($i:ident : $t:ty $(,)*) => {
input_internal!{$i : $t}
};
(mut $i:ident : $t:ty $(,)*) => {
input_internal!{mut $i : $t}
};
(mut $i:ident : $t:ty,$($q:tt)*) => {
input_internal!{mut $i : $t}
inputv!{$($q)*}
};
($i:ident : $t:ty,$($q:tt)*) => {
input_internal!{$i : $t}
inputv!{$($q)*}
};
}
pub fn input_all() {
INPUT_BUFFER.with(|p| {
if p.borrow().len() == 0 {
let mut temp_str = String::new();
std::io::stdin().read_to_string(&mut temp_str).unwrap();
let mut split_result_iter = temp_str
.split_whitespace()
.map(|q| q.to_string())
.collect::<std::collections::VecDeque<_>>();
p.borrow_mut().append(&mut split_result_iter)
}
});
}
pub fn input_line_str() -> String {
let mut s = String::new();
io::stdin().read_line(&mut s).unwrap();
s.trim().to_string()
}
#[allow(clippy::match_wild_err_arm)]
pub fn input_vector<T>() -> Vec<T>
where
T: std::str::FromStr,
{
let mut v: Vec<T> = Vec::new();
let s = input_line_str();
let split_result = s.split(SPLIT_DELIMITER);
for z in split_result {
let buf = match z.parse() {
Ok(r) => r,
Err(_) => panic!("Parse Error",),
};
v.push(buf);
}
v
}
#[allow(clippy::match_wild_err_arm)]
pub fn input_vector_row<T>(n: usize) -> Vec<T>
where
T: std::str::FromStr,
{
let mut v = Vec::with_capacity(n);
for _ in 0..n {
let buf = match input_line_str().parse() {
Ok(r) => r,
Err(_) => panic!("Parse Error",),
};
v.push(buf);
}
v
}
pub trait ToCharVec {
fn to_charvec(&self) -> Vec<char>;
}
impl ToCharVec for String {
fn to_charvec(&self) -> Vec<char> {
self.to_string().chars().collect::<Vec<_>>()
}
}
}
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