結果
問題 |
No.2315 Flying Camera
|
ユーザー |
![]() |
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 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 24 |
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
#![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()) } } } }