結果
問題 | No.1006 Share an Integer |
ユーザー | fukafukatani |
提出日時 | 2020-03-06 22:06:05 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 1,337 ms / 2,000 ms |
コード長 | 2,126 bytes |
コンパイル時間 | 12,827 ms |
コンパイル使用メモリ | 392,000 KB |
実行使用メモリ | 17,488 KB |
最終ジャッジ日時 | 2024-10-14 07:08:09 |
合計ジャッジ時間 | 24,804 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | AC | 1 ms
6,816 KB |
testcase_01 | AC | 1 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,816 KB |
testcase_03 | AC | 1 ms
6,816 KB |
testcase_04 | AC | 1 ms
6,820 KB |
testcase_05 | AC | 1 ms
6,820 KB |
testcase_06 | AC | 1 ms
6,820 KB |
testcase_07 | AC | 1 ms
6,820 KB |
testcase_08 | AC | 2 ms
6,816 KB |
testcase_09 | AC | 1 ms
6,824 KB |
testcase_10 | AC | 1 ms
6,816 KB |
testcase_11 | AC | 632 ms
10,544 KB |
testcase_12 | AC | 1,248 ms
16,608 KB |
testcase_13 | AC | 1,337 ms
17,464 KB |
testcase_14 | AC | 1,334 ms
17,488 KB |
testcase_15 | AC | 1,099 ms
15,092 KB |
testcase_16 | AC | 437 ms
8,504 KB |
testcase_17 | AC | 651 ms
10,728 KB |
testcase_18 | AC | 1,106 ms
15,396 KB |
testcase_19 | AC | 1,041 ms
14,800 KB |
testcase_20 | AC | 1,157 ms
15,680 KB |
testcase_21 | AC | 1,331 ms
17,428 KB |
コンパイルメッセージ
warning: function `read_vec` is never used --> src/main.rs:45:4 | 45 | fn read_vec<T: std::str::FromStr>() -> Vec<T> { | ^^^^^^^^ | = note: `#[warn(dead_code)]` on by default
ソースコード
#![allow(unused_imports)] #![allow(non_snake_case)] use std::cmp::*; use std::collections::*; use std::io::Write; #[allow(unused_macros)] macro_rules! debug { ($($e:expr),*) => { #[cfg(debug_assertions)] $({ let (e, mut err) = (stringify!($e), std::io::stderr()); writeln!(err, "{} = {:?}", e, $e).unwrap() })* }; } fn main() { let x = read::<i64>(); let mut count = vec![0; x as usize + 1]; count[1] = 1; let mut xx = 1; while xx * xx <= x { xx += 1; } let primes = get_primes(xx + 1); for i in 1..x { count[i as usize] = factorize(i, &primes); } let f = |n: i64| n - count[n as usize]; let min_fab = (1..x).map(|i| (f(i) - f(x - i)).abs()).min().unwrap(); for i in 1..x { if (f(i) - f(x - i)).abs() == min_fab { println!("{} {}", i, x - i); } } } fn read<T: std::str::FromStr>() -> T { let mut s = String::new(); std::io::stdin().read_line(&mut s).ok(); s.trim().parse().ok().unwrap() } fn read_vec<T: std::str::FromStr>() -> Vec<T> { read::<String>() .split_whitespace() .map(|e| e.parse().ok().unwrap()) .collect() } fn get_primes(n: i64) -> Vec<i64> { let mut is_prime = vec![true; n as usize + 1]; let mut primes = Vec::new(); is_prime[0] = false; is_prime[1] = false; for i in 2..n + 1 { if is_prime[i as usize] { primes.push(i); let mut j = 2 * i; while j < n { is_prime[j as usize] = false; j += i; } } } primes } fn factorize(mut num: i64, primes: &Vec<i64>) -> i64 { // max_primes >= (num)^(1/2) let mut factors = vec![1; primes.len() + 1]; let mut cur = 0; for &p in primes.iter() { while num % p == 0 { factors[cur] += 1; num /= p; } if num == 1 || p * p > num { break; } cur += 1; } if num != 1 { factors[primes.len()] += 1; } factors.iter().fold(1, |x, &s| x * (0 + s)) }