結果
問題 | No.1666 累乗数 |
ユーザー | ziita |
提出日時 | 2021-09-03 22:44:14 |
言語 | Rust (1.77.0 + proconio) |
結果 |
TLE
|
実行時間 | - |
コード長 | 4,344 bytes |
コンパイル時間 | 12,441 ms |
コンパイル使用メモリ | 387,264 KB |
実行使用メモリ | 13,644 KB |
最終ジャッジ日時 | 2024-12-15 15:48:26 |
合計ジャッジ時間 | 61,053 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
(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 | 32 ms
9,380 KB |
testcase_01 | AC | 1,606 ms
7,808 KB |
testcase_02 | AC | 1,547 ms
10,496 KB |
testcase_03 | AC | 1,588 ms
7,808 KB |
testcase_04 | AC | 1,555 ms
10,496 KB |
testcase_05 | TLE | - |
testcase_06 | TLE | - |
testcase_07 | TLE | - |
testcase_08 | TLE | - |
testcase_09 | TLE | - |
testcase_10 | TLE | - |
testcase_11 | TLE | - |
testcase_12 | TLE | - |
testcase_13 | TLE | - |
testcase_14 | TLE | - |
testcase_15 | TLE | - |
testcase_16 | TLE | - |
testcase_17 | TLE | - |
testcase_18 | TLE | - |
testcase_19 | TLE | - |
ソースコード
#![allow(unused_imports)] #![allow(non_snake_case, unused)] // https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { (source = $s:expr, $($r:tt)*) => { let mut iter = $s.split_whitespace(); let mut next = || { iter.next().unwrap() }; input_inner!{next, $($r)*} }; ($($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),* )) => { ( $(read_value!($next, $t)),* ) }; ($next:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>() }; ($next:expr, chars) => { read_value!($next, String).chars().collect::<Vec<char>>() }; ($next:expr, usize1) => { read_value!($next, usize) - 1 }; ($next:expr, $t:ty) => { $next().parse::<$t>().expect("Parse error") }; } use std::io::Write; use std::collections::*; use std::cmp::*; use std::ops::*; use std::marker::*; const INF: i64 = std::i64::MAX/100; const MOD: i64 = 1_000_000_007; // const MOD: i64 = 998244353; struct SieveOfEratosthenes { primes: Vec<usize>, divs: Vec<usize>, } impl SieveOfEratosthenes { pub fn new(n: usize) -> Self { let mut divs = vec![1;n+1]; for i in 2..=n { if divs[i]!=1 { continue; } for j in 1..=n { let val = i*j; if val>n { break; } divs[val as usize] = i; } } let mut primes = divs.iter() .enumerate() .filter(|x| *x.1>1 && x.0==*x.1) .map(|x| *x.1) .collect::<Vec<usize>>(); SieveOfEratosthenes { divs, primes, } } pub fn factors(&self, n: usize) -> Vec<(usize,usize)> { assert!(n+1<=self.divs.len()); let mut ans = vec![]; let mut x = n; while x > 1 { let nxt = self.divs[x]; ans.push(nxt); x /= nxt; } let mut map = HashMap::<usize,usize>::new(); for &a in &ans { *map.entry(a).or_insert(0) += 1; } let mut ret = vec![]; for (&k,&v) in map.iter() { ret.push((k,v)); } ret } } fn main() { input! { t: usize, k: [i128;t], } for &k in &k { let mut left = 0; let mut right = 10_i128.pow(18)*2; while right-left>1 { let mid = (left+right)/2; let ret = judge(mid); if ret >= k { right = mid; } else { left = mid; } } println!("{}",right); } } fn judge(x: i128) -> i128 { let mut ret = 1; let mut p = SieveOfEratosthenes::new(100); for i in 2..=70 { let mut u = 1; let mut v = p.factors(i); let mut count = 0; for &(a,b) in &v { if b>=2 { u = 0; break; } count += 1; } if u!=0 && count%2==1 { u = -1; } let q = (x as f64).powf(1.0/i as f64) as i128; let mut r = 0; for j in (max(2,q-100)..=q+100).rev() { let mut base = 1; for k in 0..i { base *= j; if base > x { break; } } if base <= x { r = j; break; } } if r==0 { break; } ret -= u*(r-1); } ret }