#780330 (Rust) No.2016 Countdown Divisors

• 問題: No.2016 Countdown Divisors
• ユーザー: Moss_Local
• 提出日時: 2022-07-22 21:32:41
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 133 ms / 2,000 ms
• コード長: 5,607 bytes
• コンパイル時間: 12,831 ms
• コンパイル使用メモリ: 393,260 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-07-04 05:31:53
• 合計ジャッジ時間: 16,459 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	133 ms; 5,248 KB
testcase_02	AC	128 ms; 5,376 KB
testcase_03	AC	114 ms; 5,376 KB
testcase_04	AC	98 ms; 5,376 KB
testcase_05	AC	101 ms; 5,376 KB
testcase_06	AC	34 ms; 5,376 KB
testcase_07	AC	33 ms; 5,376 KB
testcase_08	AC	119 ms; 5,376 KB
testcase_09	AC	122 ms; 5,376 KB
testcase_10	AC	120 ms; 5,376 KB
testcase_11	AC	122 ms; 5,376 KB
testcase_12	AC	122 ms; 5,376 KB
testcase_13	AC	125 ms; 5,376 KB
testcase_14	AC	113 ms; 5,376 KB
testcase_15	AC	111 ms; 5,376 KB
testcase_16	AC	127 ms; 5,376 KB
testcase_17	AC	113 ms; 5,376 KB
testcase_18	AC	116 ms; 5,376 KB
testcase_19	AC	1 ms; 5,376 KB

コンパイルメッセージ

warning: unnecessary parentheses around type
  --> src/main.rs:72:15
   |
72 | fn readi() -> (i64) {
   |               ^   ^
   |
   = note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
   |
72 - fn readi() -> (i64) {
72 + fn readi() -> i64 {
   |

warning: use of deprecated function `std::intrinsics::drop_in_place`: no longer an intrinsic - use `ptr::drop_in_place` directly
  --> src/main.rs:16:22
   |
16 | use std::intrinsics::drop_in_place;
   |                      ^^^^^^^^^^^^^
   |
   = note: `#[warn(deprecated)]` on by default

warning: unused variable: `i`
   --> src/main.rs:210:9
    |
210 |     for i in 0..n {
    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
    |
    = note: `#[warn(unused_variables)]` on by default

ソースコード

// -*- coding:utf-8-unix -*-
// #![feature(map_first_last)]
#![allow(dead_code)]
#![allow(unused_imports)]
#![allow(unused_macros)]
use std::any::Any;
use std::cmp::Ordering::*;
use std::collections::*;
use std::convert::*;
use std::convert::{From, Into};
use std::error::Error;
use std::fmt::Debug;
use std::fmt::Display;
use std::fs::File;
use std::hash::Hash;
use std::intrinsics::drop_in_place;
use std::io::prelude::*;
use std::io::*;
use std::iter::Filter;
use std::iter::FromIterator;
use std::marker::Copy;
use std::mem::*;
use std::ops::BitAnd;
use std::ops::Bound::*;
use std::ops::RangeBounds;
use std::ops::{Add, Mul, Neg, Sub};
use std::process;
use std::slice::from_raw_parts;
use std::str;
use std::vec;

const INF: i64 = 1223372036854775807;
const UINF: usize = INF as usize;
const LINF: i64 = 2147483647;
const INF128: i128 = 1223372036854775807000000000000;
// const MOD: i64 = 1000000007;
const MOD: i64 = 998244353;
const UMOD: usize = MOD as usize;
const M_PI: f64 = 3.14159265358979323846;
// const MOD: i64 = INF;

use std::cmp::*;
use std::collections::*;
use std::io::stdin;
use std::io::stdout;
use std::io::Write;

macro_rules! p {
    ($x:expr) => {
        println!("{}", $x);
    };
}
macro_rules! d {
    ($x:expr) => {
        println!("{:?}", $x);
    };
}

fn main() {
    solve();
}

// use str::Chars;
#[allow(dead_code)]
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()
}

#[allow(dead_code)]
fn readi() -> (i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    iter.next().unwrap().parse::<i64>().unwrap()
}

#[allow(dead_code)]
fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}
#[allow(dead_code)]
fn read_mat<T: std::str::FromStr>(n: u32) -> Vec<Vec<T>> {
    (0..n).map(|_| read_vec()).collect()
}

#[allow(dead_code)]
fn readii() -> (i64, i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
    )
}

#[allow(dead_code)]
fn readiii() -> (i64, i64, i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
    )
}
#[allow(dead_code)]
fn readuu() -> (usize, usize) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
    )
}

fn readcc() -> (char, char) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<char>().unwrap(),
        iter.next().unwrap().parse::<char>().unwrap(),
    )
}

fn readuuu() -> (usize, usize, usize) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
    )
}
#[allow(dead_code)]
fn readiiii() -> (i64, i64, i64, i64) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
        iter.next().unwrap().parse::<i64>().unwrap(),
    )
}

#[allow(dead_code)]
fn readuuuu() -> (usize, usize, usize, usize) {
    let mut str = String::new();
    let _ = stdin().read_line(&mut str).unwrap();
    let mut iter = str.split_whitespace();
    (
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
        iter.next().unwrap().parse::<usize>().unwrap(),
    )
}

fn solve_part() {
    let n: usize = read();
    if n == 1 || n == 3 || n == 4 || n == 5 || n == 7 || n == 8 {
        p!(1);
    } else {
        p!(2);
    }
    return;
}
fn divisors(n: usize) -> Vec<usize> {
    let mut divisors = Vec::new();
    // n := i * x とおくと、 i が i > root(n) の時、　i はすでに ある x に探索されているから
    // i <= root(n) まで探索すればよい
    for i in 1..=(f64::sqrt(n as f64) + 1e-9) as usize {
        // i で n が割り切れた場合
        if n % i == 0 {
            // 約数リストに格納
            divisors.push(i);

            // n := i * x の x を格納。ただし x := i の時は除く
            if i != n / i {
                divisors.push(n / i);
            }
        }
    }
    divisors.sort();
    divisors
}
fn solve() {
    // let mut res = vec![0; 100];
    // res[0] = 0;
    // res[1] = 1;
    // res[2] = 2;
    // for i in 3..100 {
    //     let x = i - divisors((i)).len();
    //     res[i] = res[x];
    // }
    // d!(res);

    let n: usize = read();
    for i in 0..n {
        solve_part();
    }
    return;
}