結果

問題 No.2315 Flying Camera
ユーザー naut3naut3
提出日時 2023-06-18 19:26:19
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 47 ms / 2,000 ms
コード長 1,991 bytes
コンパイル時間 20,701 ms
コンパイル使用メモリ 376,364 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-06-26 08:33:22
合計ジャッジ時間 22,616 ms
ジャッジサーバーID
(参考情報)
judge3 / judge1
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
sample AC * 3
other AC * 24
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 `Result` that must be used
  --> src/main.rs:56:5
   |
56 |     writeln!(out, "{}", score);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this `Result` may be an `Err` variant, which should be handled
   = note: `#[warn(unused_must_use)]` on by default
   = note: this warning originates in the macro `writeln` (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(non_snake_case, unused_imports)]
use std::io::{self, prelude::*};
use std::str;
fn main() {
let (stdin, stdout) = (io::stdin(), io::stdout());
let mut scan = Scanner::new(stdin.lock());
let mut out = io::BufWriter::new(stdout.lock());
macro_rules! input {
($T: ty) => {
scan.token::<$T>()
};
}
fn dist(x1: usize, y1: usize, x2: usize, y2: usize) -> usize {
let mut ret = 0;
if x1 < x2 {
ret += x2 - x1;
} else {
ret += x1 - x2;
}
if y1 < y2 {
ret += y2 - y1;
} else {
ret += y1 - y2;
}
ret
}
let N = input!(usize);
let XY = (0..N)
.map(|_| (input!(usize), input!(usize)))
.collect::<Vec<_>>();
let mut score = 1 << 60;
for i in 0..=300 {
for j in 0..=300 {
let mut s = 0;
for k in 0..N {
let (x, y) = XY[k];
s += dist(i, j, x, y);
}
if s < score {
score = s;
}
}
}
writeln!(out, "{}", score);
}
struct Scanner<R> {
reader: R,
buf_str: Vec<u8>,
buf_iter: str::SplitWhitespace<'static>,
}
impl<R: BufRead> Scanner<R> {
fn new(reader: R) -> Self {
Self {
reader,
buf_str: vec![],
buf_iter: "".split_whitespace(),
}
}
fn token<T: str::FromStr>(&mut self) -> T {
loop {
if let Some(token) = self.buf_iter.next() {
return token.parse().ok().expect("Failed parse");
}
self.buf_str.clear();
self.reader
.read_until(b'\n', &mut self.buf_str)
.expect("Failed read");
self.buf_iter = unsafe {
let slice = str::from_utf8_unchecked(&self.buf_str);
std::mem::transmute(slice.split_whitespace())
}
}
}
}
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