結果

問題 No.2249 GCDistance
ユーザー koba-e964
提出日時 2023-07-30 01:31:05
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 847 ms / 5,000 ms
コード長 1,854 bytes
コンパイル時間 16,348 ms
コンパイル使用メモリ 379,280 KB
実行使用メモリ 169,472 KB
最終ジャッジ日時 2024-10-08 13:46:13
合計ジャッジ時間 24,031 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 1
other AC * 10
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

use std::io::{Write, BufWriter};
// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
($($r:tt)*) => {
let stdin = std::io::stdin();
let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
let mut next = move || -> String{
bytes.by_ref().map(|r|r.unwrap() as char)
.skip_while(|c|c.is_whitespace())
.take_while(|c|!c.is_whitespace())
.collect()
};
input_inner!{next, $($r)*}
};
}
macro_rules! input_inner {
($next:expr) => {};
($next:expr,) => {};
($next:expr, $var:ident : $t:tt $($r:tt)*) => {
let $var = read_value!($next, $t);
input_inner!{$next $($r)*}
};
}
macro_rules! read_value {
($next:expr, [ $t:tt ; $len:expr ]) => {
(0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
};
($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error"));
}
// https://yukicoder.me/problems/no/2249 (3)
fn main() {
let out = std::io::stdout();
let mut out = BufWriter::new(out.lock());
macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
input! {
n: usize,
a: [usize; n],
}
const W: usize = 10_000_001;
let mut phi = vec![0i64; W];
let mut pr = vec![true; W];
pr[0] = false;
pr[1] = false;
for i in 2..W {
phi[i] = i as i64;
}
for i in 2..W {
if !pr[i] { continue; }
phi[i] = i as i64 - 1;
for j in 2..=(W - 1) / i {
pr[i * j] = false;
phi[i * j] /= i as i64;
phi[i * j] *= i as i64 - 1;
}
}
let mut acc = vec![0i64; W];
for i in 2..W {
acc[i] = acc[i - 1] + (i as i64 - 1) * 2 - phi[i];
}
for a in a {
puts!("{}\n", acc[a]);
}
}
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