結果
問題 | No.726 Tree Game |
ユーザー | qryxip |
提出日時 | 2018-08-24 23:14:42 |
言語 | Text (cat 8.3) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,822 bytes |
コンパイル時間 | 41 ms |
コンパイル使用メモリ | 6,816 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-06-23 09:45:12 |
合計ジャッジ時間 | 871 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 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 | - |
ソースコード
#![allow(unused_imports)] #![cfg_attr(feature = "cargo-clippy", allow(redundant_field_names))] #[macro_use] mod _input { use std::fmt; use std::io::{self, Read}; use std::str::{self, FromStr}; macro_rules! input { ($($name:ident : $t:tt),*,) => { input!($($name: $t),*) }; ($($name:ident : $t:tt),*) => { let mut _scanned = ::_input::Scanned::new(::std::io::stdin(), 1024); $( let $name = _read_value!(_scanned, $t); )* }; } macro_rules! _read_value { ($scanned:expr, ($($t:tt),*)) => { ($(_read_value!($scanned, $t)),*) }; ($scanned:expr, [$t:tt; $n:expr]) => { (0..$n).map(|_| _read_value!($scanned, $t)).collect::<Vec<_>>() }; ($scanned:expr, _bytes) => { _read_value!($scanned, String).into_bytes() }; ($scanned:expr, _index) => { _read_value!($scanned, usize) - 1 }; ($scanned:expr, $t:ty) => { $scanned.next::<$t>() }; } #[derive(Default)] pub struct Scanned { buf: Vec<u8>, pos: usize, } impl Scanned { pub fn new<R: Read>(mut input: R, estimated: usize) -> Self { let mut buf = Vec::with_capacity(estimated); let _ = io::copy(&mut input, &mut buf).unwrap(); if buf.last() != Some(&b'\n') { buf.push(b'\n'); // input may not end with '\n' } // https://doc.rust-lang.org/src/core/char/methods.rs.html#906-908 // assert!(str::from_utf8(&buf).unwrap().bytes().all(|c| u32::from(c) <= 0x7F)); Scanned { buf: buf, pos: 0 } } #[inline] pub fn next<T: FromStr>(&mut self) -> T where T::Err: fmt::Debug, { let mut start = None; loop { match (self.buf[self.pos], start.is_some()) { (b' ', true) | (b'\n', true) => break, (_, true) | (b' ', false) | (b'\n', false) => self.pos += 1, (_, false) => start = Some(self.pos), } } let target = &self.buf[start.unwrap()..self.pos]; unsafe { str::from_utf8_unchecked(target) }.parse().unwrap() } } } #[allow(dead_code)] mod output { use std::io::{self, BufWriter, StdoutLock, Write as _Write}; pub fn with_stdout<F: FnMut(&mut BufWriter<StdoutLock>)>(mut f: F) { let stdout = io::stdout(); let mut stdout = BufWriter::new(stdout.lock()); f(&mut stdout); stdout.flush().unwrap(); } } use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque}; use std::io::Write; use std::ops::{ Add, AddAssign, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign, Div, DivAssign, Mul, MulAssign, Neg, Not, Rem, RemAssign, Sub, SubAssign, }; use std::str::{self, FromStr}; use std::{char, cmp, f32, f64, fmt, i16, i32, i64, i8, thread, u16, u32, u64, u8}; fn main() { input! { y: u64, x: u64, } let s = nearest_prime(y) - y; let t = nearest_prime(x) - x; let (p, q) = (is_prime(y), is_prime(x)); if p && q || p && (s == 1) || q && (t == 1) || (s + t) % 2 == 0 { println!("Second"); } else { println!("First"); } } fn nearest_prime(mut x: u64) -> u64 { if is_prime(x) { x += 1; } while !is_prime(x) { x += 1; } x } fn is_prime(x: u64) -> bool { x > 1 && { let mut k = 2u64; loop { if k.pow(2) > x { break true; } if x % k == 0 { break false; } k += 1; } } }