結果
問題 | No.1251 絶対に間違ってはいけない最小化問題 |
ユーザー | cympfh |
提出日時 | 2020-10-09 21:34:41 |
言語 | Rust (1.77.0 + proconio) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,896 bytes |
コンパイル時間 | 16,215 ms |
コンパイル使用メモリ | 379,224 KB |
実行使用メモリ | 19,532 KB |
最終ジャッジ日時 | 2024-07-20 09:39:16 |
合計ジャッジ時間 | 29,579 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | WA | - |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | AC | 1 ms
5,376 KB |
testcase_44 | AC | 1 ms
5,376 KB |
ソースコード
#![allow(unused_imports, unused_macros, dead_code)] macro_rules! min { (.. $x:expr) => {{ let mut it = $x.iter(); it.next().map(|z| it.fold(z, |x, y| min!(x, y))) }}; ($x:expr) => ($x); ($x:expr, $($ys:expr),*) => {{ let t = min!($($ys),*); if $x < t { $x } else { t } }} } macro_rules! max { (.. $x:expr) => {{ let mut it = $x.iter(); it.next().map(|z| it.fold(z, |x, y| max!(x, y))) }}; ($x:expr) => ($x); ($x:expr, $($ys:expr),*) => {{ let t = max!($($ys),*); if $x > t { $x } else { t } }} } macro_rules! trace { ($x:expr) => { #[cfg(debug_assertions)] eprintln!(">>> {} = {:?}", stringify!($x), $x) }; ($($xs:expr),*) => { trace!(($($xs),*)) } } macro_rules! flush { () => { std::io::stdout().flush().unwrap(); }; } macro_rules! put { (.. $x:expr) => {{ let mut it = $x.iter(); if let Some(x) = it.next() { print!("{}", x); } for x in it { print!(" {}", x); } println!(""); }}; ($x:expr) => { println!("{}", $x) }; ($x:expr, $($xs:expr),*) => { print!("{} ", $x); put!($($xs),*) } } const M: i64 = 1_000_000_007; fn f(x: f64, xs: &Vec<f64>, ys: &Vec<f64>) -> f64 { let n = xs.len(); (0..n).map(|i| (x - xs[i]).abs() * ys[i]).sum() } fn main() { let mut sc = Scanner::new(); let n: usize = sc.cin(); let xs: Vec<f64> = sc.vec(n); let ys: Vec<f64> = sc.vec(n); let mut argx = 0.0; let mut ans = f(0.0, &xs, &ys); let mut left = -1_000_000.0; let mut right = 1_000_000.0; for _ in 0..200 { let m1 = (left + left + right) / 3.0; let m2 = (left + right + right) / 3.0; let z1 = f(m1, &xs, &ys); let z2 = f(m2, &xs, &ys); if z1 < z2 { right = m2; argx = m1; ans = z1; } else { left = m1; argx = m2; ans = z2; } } put!(argx, ans.round()); } use std::collections::VecDeque; use std::io::{self, Write}; use std::str::FromStr; struct Scanner { stdin: io::Stdin, buffer: VecDeque<String>, } impl Scanner { fn new() -> Self { Scanner { stdin: io::stdin(), buffer: VecDeque::new(), } } fn cin<T: FromStr>(&mut self) -> T { while self.buffer.is_empty() { let mut line = String::new(); let _ = self.stdin.read_line(&mut line); for w in line.split_whitespace() { self.buffer.push_back(String::from(w)); } } self.buffer.pop_front().unwrap().parse::<T>().ok().unwrap() } fn chars(&mut self) -> Vec<char> { self.cin::<String>().chars().collect() } fn vec<T: FromStr>(&mut self, n: usize) -> Vec<T> { (0..n).map(|_| self.cin()).collect() } }