結果
問題 | No.2355 Unhappy Back Dance |
ユーザー | naut3 |
提出日時 | 2023-06-18 12:13:25 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 1,438 ms / 6,000 ms |
コード長 | 2,171 bytes |
コンパイル時間 | 14,151 ms |
コンパイル使用メモリ | 377,220 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-26 01:10:43 |
合計ジャッジ時間 | 31,338 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 1 ms
5,248 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 95 ms
5,376 KB |
testcase_11 | AC | 91 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 110 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 1,433 ms
5,376 KB |
testcase_17 | AC | 1,438 ms
5,376 KB |
testcase_18 | AC | 1,436 ms
5,376 KB |
testcase_19 | AC | 1,433 ms
5,376 KB |
testcase_20 | AC | 1,437 ms
5,376 KB |
testcase_21 | AC | 590 ms
5,376 KB |
testcase_22 | AC | 106 ms
5,376 KB |
testcase_23 | AC | 112 ms
5,376 KB |
testcase_24 | AC | 1,285 ms
5,376 KB |
testcase_25 | AC | 682 ms
5,376 KB |
testcase_26 | AC | 689 ms
5,376 KB |
testcase_27 | AC | 594 ms
5,376 KB |
testcase_28 | AC | 12 ms
5,376 KB |
testcase_29 | AC | 30 ms
5,376 KB |
testcase_30 | AC | 1,174 ms
5,376 KB |
testcase_31 | AC | 862 ms
5,376 KB |
testcase_32 | AC | 80 ms
5,376 KB |
testcase_33 | AC | 487 ms
5,376 KB |
testcase_34 | AC | 5 ms
5,376 KB |
testcase_35 | AC | 14 ms
5,376 KB |
testcase_36 | AC | 593 ms
5,376 KB |
testcase_37 | AC | 316 ms
5,376 KB |
testcase_38 | AC | 389 ms
5,376 KB |
testcase_39 | AC | 302 ms
5,376 KB |
コンパイルメッセージ
warning: unused `Result` that must be used --> src/main.rs:65:5 | 65 | writeln!(out, "{}", ans); | ^^^^^^^^^^^^^^^^^^^^^^^^ | = 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 gcd(a: usize, b: usize) -> usize { if a < b { return gcd(b, a); } if b == 0 { return a; } else { return gcd(b, a % b); } } 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>() }; } let N = input!(usize); let mut XY = vec![]; for _ in 0..N { let (x, y) = (input!(isize), input!(isize)); XY.push((x, y)); } let mut ans = 0; for i in 0..N { let (x1, y1) = XY[i]; let mut S = std::collections::BTreeSet::new(); for j in 0..N { if i == j { continue; } let (x2, y2) = XY[j]; let (mut dx, mut dy) = (x1 - x2, y1 - y2); let (gx, gy) = (dx.abs() as usize, dy.abs() as usize); let g = gcd(gx, gy) as isize; dx /= g; dy /= g; if S.contains(&(dx, dy)) { ans += 1; break; } S.insert((dx, dy)); } } writeln!(out, "{}", ans); } 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()) } } } }