結果
問題 | No.1509 Swap!! |
ユーザー | akakimidori |
提出日時 | 2021-05-14 23:08:14 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 24 ms / 2,000 ms |
コード長 | 4,485 bytes |
コンパイル時間 | 13,861 ms |
コンパイル使用メモリ | 378,344 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-10-02 03:57:59 |
合計ジャッジ時間 | 15,166 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
(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
6,820 KB |
testcase_01 | AC | 1 ms
6,820 KB |
testcase_02 | AC | 23 ms
6,820 KB |
testcase_03 | AC | 23 ms
6,816 KB |
testcase_04 | AC | 23 ms
6,820 KB |
testcase_05 | AC | 23 ms
6,816 KB |
testcase_06 | AC | 24 ms
6,816 KB |
testcase_07 | AC | 23 ms
6,820 KB |
testcase_08 | AC | 23 ms
6,824 KB |
testcase_09 | AC | 23 ms
6,820 KB |
testcase_10 | AC | 23 ms
6,820 KB |
testcase_11 | AC | 22 ms
6,816 KB |
testcase_12 | AC | 23 ms
6,820 KB |
testcase_13 | AC | 23 ms
6,816 KB |
testcase_14 | AC | 23 ms
6,820 KB |
testcase_15 | AC | 23 ms
6,816 KB |
testcase_16 | AC | 23 ms
6,816 KB |
testcase_17 | AC | 23 ms
6,816 KB |
testcase_18 | AC | 22 ms
6,820 KB |
testcase_19 | AC | 23 ms
6,820 KB |
testcase_20 | AC | 22 ms
6,820 KB |
testcase_21 | AC | 24 ms
6,816 KB |
testcase_22 | AC | 23 ms
6,816 KB |
testcase_23 | AC | 22 ms
6,820 KB |
testcase_24 | AC | 23 ms
6,816 KB |
testcase_25 | AC | 23 ms
6,816 KB |
testcase_26 | AC | 23 ms
6,816 KB |
testcase_27 | AC | 17 ms
6,816 KB |
testcase_28 | AC | 17 ms
6,820 KB |
testcase_29 | AC | 16 ms
6,820 KB |
testcase_30 | AC | 23 ms
6,816 KB |
ソースコード
//---------- begin union_find ---------- pub struct DSU { p: Vec<i32>, } impl DSU { pub fn new(n: usize) -> DSU { assert!(n < std::i32::MAX as usize); DSU { p: vec![-1; n] } } pub fn init(&mut self) { self.p.iter_mut().for_each(|p| *p = -1); } pub fn root(&self, mut x: usize) -> usize { assert!(x < self.p.len()); while self.p[x] >= 0 { x = self.p[x] as usize; } x } pub fn same(&self, x: usize, y: usize) -> bool { assert!(x < self.p.len() && y < self.p.len()); self.root(x) == self.root(y) } pub fn unite(&mut self, x: usize, y: usize) -> Option<(usize, usize)> { assert!(x < self.p.len() && y < self.p.len()); let mut x = self.root(x); let mut y = self.root(y); if x == y { return None; } if self.p[x] > self.p[y] { std::mem::swap(&mut x, &mut y); } self.p[x] += self.p[y]; self.p[y] = x as i32; Some((x, y)) } pub fn parent(&self, x: usize) -> Option<usize> { assert!(x < self.p.len()); let p = self.p[x]; if p >= 0 { Some(p as usize) } else { None } } pub fn sum<F>(&self, mut x: usize, mut f: F) -> usize where F: FnMut(usize), { while let Some(p) = self.parent(x) { f(x); x = p; } x } pub fn size(&self, x: usize) -> usize { assert!(x < self.p.len()); let r = self.root(x); (-self.p[r]) as usize } } //---------- end union_find ---------- // ---------- begin binary_gcd ---------- pub fn binary_gcd(a: u64, b: u64) -> u64 { if a == 0 || b == 0 { return a + b; } let x = a.trailing_zeros(); let y = b.trailing_zeros(); let mut a = a >> x; let mut b = b >> y; while a != b { let x = (a ^ b).trailing_zeros(); if a < b { std::mem::swap(&mut a, &mut b); } a = (a - b) >> x; } a << x.min(y) } // ---------- end binary_gcd ---------- // ---------- begin input macro ---------- // reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { (source = $s:expr, $($r:tt)*) => { let mut iter = $s.split_whitespace(); input_inner!{iter, $($r)*} }; ($($r:tt)*) => { let s = { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); s }; let mut iter = s.split_whitespace(); input_inner!{iter, $($r)*} }; } macro_rules! input_inner { ($iter:expr) => {}; ($iter:expr, ) => {}; ($iter:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($iter, $t); input_inner!{$iter $($r)*} }; } macro_rules! read_value { ($iter:expr, ( $($t:tt),* )) => { ( $(read_value!($iter, $t)),* ) }; ($iter:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>() }; ($iter:expr, chars) => { read_value!($iter, String).chars().collect::<Vec<char>>() }; ($iter:expr, bytes) => { read_value!($iter, String).bytes().collect::<Vec<u8>>() }; ($iter:expr, usize1) => { read_value!($iter, usize) - 1 }; ($iter:expr, $t:ty) => { $iter.next().unwrap().parse::<$t>().expect("Parse error") }; } // ---------- end input macro ---------- use std::io::Write; fn run() { input! { t: usize, ask: [(u64, u64, u64); t], } /* for n in 2..=300 { for a in 2..n { for b in 2..a { let mut dsu = DSU::new(n); for i in a..n { dsu.unite(i, i - a); } for i in b..n { dsu.unite(i, i - b); } if dsu.size(0) == n && a + b > n + 1{ println!("OK {} {} {}", n, a, b); } } } } */ let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); for (n, a, b) in ask { let mut ok = true; ok &= binary_gcd(a, b) == 1; ok &= a + b <= n + 1; if ok { writeln!(out, "YES").ok(); } else { writeln!(out, "NO").ok(); } } } fn main() { run(); }