結果
問題 | No.2420 Simple Problem |
ユーザー | haihamabossu |
提出日時 | 2023-08-12 14:10:23 |
言語 | Rust (1.77.0 + proconio) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,085 bytes |
コンパイル時間 | 14,231 ms |
コンパイル使用メモリ | 378,124 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-19 17:40:16 |
合計ジャッジ時間 | 20,511 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
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 | WA | - |
testcase_02 | WA | - |
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 | - |
ソースコード
pub mod binary_search { type T = usize; pub fn binary_search(mut ok: T, mut ng: T, f: impl Fn(T) -> bool) -> T { let cont = |ok: T, ng: T| { let l = ok.min(ng); let r = ok.max(ng); l + 1 < r }; while cont(ok, ng) { let x = (ok + ng) / 2; if f(x) { ok = x; } else { ng = x; } } ok } } pub mod scanner { pub struct Scanner { buf: Vec<String>, } impl Scanner { pub fn new() -> Self { Self { buf: vec![] } } pub fn new_from(source: &str) -> Self { let source = String::from(source); let buf = Self::split(source); Self { buf } } pub fn next<T: std::str::FromStr>(&mut self) -> T { loop { if let Some(x) = self.buf.pop() { return x.parse().ok().expect(""); } let mut source = String::new(); std::io::stdin().read_line(&mut source).expect(""); self.buf = Self::split(source); } } fn split(source: String) -> Vec<String> { source .split_whitespace() .rev() .map(String::from) .collect::<Vec<_>>() } } } use crate::{binary_search::binary_search, scanner::Scanner}; use std::io::Write; fn main() { let mut scanner = Scanner::new(); let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); let t: usize = scanner.next(); for _ in 0..t { solve(&mut scanner, &mut out); } } fn solve(scanner: &mut Scanner, out: &mut std::io::BufWriter<std::io::StdoutLock>) { let a: usize = scanner.next(); let b: usize = scanner.next(); let xx = binary_search(1e9 as usize, a + b, |xx| { a * b * 4 < (xx - a - b) * (xx - a - b) }); let x = binary_search(xx, 0, |x| xx <= x * x); writeln!(out, "{}", x).unwrap(); }