#527844 (Rust) No.537 ユーザーID

提出ソース

結果

問題	No.537 ユーザーID
ユーザー	MasuqaT
提出日時	2020-08-10 23:54:33
言語	Rust (1.77.0)
結果	AC
実行時間	16 ms / 2,000 ms
コード長	6,543 bytes
コンパイル時間	1,780 ms
コンパイル使用メモリ	188,520 KB
実行使用メモリ	5,376 KB
最終ジャッジ日時	2024-04-17 07:50:21
合計ジャッジ時間	3,265 ms
ジャッジサーバーID （参考情報）	judge2 / judge3

このコードへのチャレンジ
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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 5,248 KB
testcase_01	AC	1 ms 5,376 KB
testcase_02	AC	1 ms 5,376 KB
testcase_03	AC	1 ms 5,376 KB
testcase_04	AC	1 ms 5,376 KB
testcase_05	AC	1 ms 5,376 KB
testcase_06	AC	1 ms 5,376 KB
testcase_07	AC	1 ms 5,376 KB
testcase_08	AC	1 ms 5,376 KB
testcase_09	AC	1 ms 5,376 KB
testcase_10	AC	1 ms 5,376 KB
testcase_11	AC	1 ms 5,376 KB
testcase_12	AC	1 ms 5,376 KB
testcase_13	AC	1 ms 5,376 KB
testcase_14	AC	1 ms 5,376 KB
testcase_15	AC	1 ms 5,376 KB
testcase_16	AC	1 ms 5,376 KB
testcase_17	AC	1 ms 5,376 KB
testcase_18	AC	10 ms 5,376 KB
testcase_19	AC	13 ms 5,376 KB
testcase_20	AC	11 ms 5,376 KB
testcase_21	AC	8 ms 5,376 KB
testcase_22	AC	13 ms 5,376 KB
testcase_23	AC	8 ms 5,376 KB
testcase_24	AC	3 ms 5,376 KB
testcase_25	AC	13 ms 5,376 KB
testcase_26	AC	14 ms 5,376 KB
testcase_27	AC	10 ms 5,376 KB
testcase_28	AC	7 ms 5,376 KB
testcase_29	AC	16 ms 5,376 KB
testcase_30	AC	13 ms 5,376 KB
testcase_31	AC	5 ms 5,376 KB
testcase_32	AC	5 ms 5,376 KB
testcase_33	AC	15 ms 5,376 KB
testcase_34	AC	9 ms 5,376 KB

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ソースコード

raw source code

// Macro by MasuqaT (occar421)
// https://github.com/occar421/ProgrammingContest/tree/master/templates/src/standard_io.rs

use std::io;
use std::io::{BufRead, Write, Result};
use std::ops::{Rem, Div, Mul};
use std::fmt::Display;
use std::collections::HashSet;
use std::iter::FromIterator;
use std::str::FromStr;

// From https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    (stdin = $s:expr, $($r:tt)*) => {
        let s = {
            let mut s = String::new();
            $s.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>>()
    };

    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };

    ($iter:expr, $t:ty) => {
        $iter.next().unwrap_or_default().parse::<$t>().expect("Parse error")
    };
}

#[allow(unused_macros)]
macro_rules! assert_judge {
    ($method:ident, $input:expr, $expected:expr) => {
        {
            let input = $input.as_bytes();
            let mut output = Vec::new();

            $method(&input[..], &mut output).expect("Should not emit error");

            let output = String::from_utf8(output).expect("Not UTF-8");

            assert_eq!(output, $expected);
        }
    };
}

#[allow(unused_macros)]
macro_rules! assert_judge_with_output {
    ($method:ident, $input:expr) => {
        {
            let input = $input.as_bytes();
            let mut output = Vec::new();

            $method(&input[..], &mut output).expect("Should not emit error");

            String::from_utf8(output).expect("Not UTF-8")
        }
    };
}

#[allow(unused_macros)]
macro_rules! assert_eq_with_error {
    ($left:expr, $right:expr, $precision:expr) => ({
        match (&$left, &$right, &$precision) {
            (left_val, right_val, precision_val) => {
                if !(*left_val - *precision_val < *right_val && *right_val < *left_val + *precision_val) {
                    // The reborrows below are intentional. Without them, the stack slot for the
                    // borrow is initialized even before the values are compared, leading to a
                    // noticeable slow down.
                    panic!(r#"assertion failed: `(left == right) +- precision`
      left: `{:?}`,
     right: `{:?}`,
 precision: `{:?}`"#, &*left_val, &*right_val, &*precision_val)
                }
            }
        }
    });
}

#[allow(unused_macros)]
macro_rules! assert_judge_with_error {
    ($method:ident, $input:expr, $expected:expr, $t:ty | $precision:expr ) => {
        {
            let input = $input.as_bytes();
            let mut output = Vec::new();

            $method(&input[..], &mut output).expect("Should not emit error");

            let output = String::from_utf8(output).expect("Not UTF-8");

            let actual: $t = output.parse().unwrap();
            let expected: $t = $expected.parse().unwrap();

            assert_eq_with_error!(actual, expected, $precision);
        }
    };
}

pub trait GenericInteger: Copy + PartialEq + FromStr + Display + Rem<Output=Self> + Div<Output=Self> + Mul<Output=Self> {
    fn zero() -> Self;
}

macro_rules! dec_gi {
    () => {};
    ($t:ty $(, $r:ty)*) => {
        impl GenericInteger for $t {
            #[inline]
            fn zero() -> Self { 0 }
        }

        dec_gi![ $( $r ),* ];
    };
}

dec_gi![u8, u16, u32, u64, u128, usize, i8, i16, i32, i64, i128, isize];

#[allow(dead_code)]
pub fn gcd<T>(a: T, b: T) -> T where T: GenericInteger {
    if b == T::zero() {
        a
    } else {
        gcd(b, a % b)
    }
}

#[allow(dead_code)]
#[inline]
pub fn lcm<T>(a: T, b: T) -> T where T: GenericInteger {
    a / gcd(a, b) * b
}

pub trait IterExt<T> {
    fn easy_join(&mut self, separator: &str) -> String;
}

impl<TItem, TTrait> IterExt<TItem> for TTrait where TItem: Display, TTrait: Iterator<Item=TItem> {
    #[inline]
    fn easy_join(&mut self, separator: &str) -> String {
        self.map(|i| format!("{}", i)).collect::<Vec<_>>().join(separator)
    }
}

pub trait VecExt<T> {
    fn add_like_string(&mut self) -> T;
}

impl<T> VecExt<T> for Vec<T> where T: GenericInteger {
    #[inline]
    fn add_like_string(&mut self) -> T {
        if let Ok(value) = self.iter().easy_join("").parse::<T>() {
            value
        } else {
            panic!("Invalid value")
        }
    }
}

#[allow(unused_macros)]
macro_rules! swap {
    ($v1:expr, $v2:expr) => {
        let buf = $v1;
        $v1 = $v2;
        $v2 = buf;
    };
}

#[macro_export]
macro_rules! invert_index {
    ($v:expr) => ({
        let mut goal = vec![0usize; $v.len()];
        for (i, v) in $v.iter().enumerate() {
            goal[*v] = i;
        }
        goal
    })
}

trait ThenSome: Into<bool> {
    fn then_some_<T>(self, t: T) -> Option<T> {
        if self.into() { Some(t) } else { None }
    }
}

impl ThenSome for bool {}

fn main() {
    let stdio = io::stdin();
    let input = stdio.lock();

    let output = io::stdout();

    process(input, output).expect("Should not emit error");
}

fn process<R, W>(mut reader: R, mut writer: W) -> Result<()> where
    R: BufRead,
    W: Write {
    input! {
        stdin = reader,
        n: u64
    }

    let rt = (n as f32).sqrt().floor() as u64;
    let set: HashSet<_> = HashSet::from_iter((1..=rt).filter(|x| n % x == 0)
        .flat_map(|x| vec![vec![x, n / x].add_like_string(), vec![n / x, x].add_like_string()])
    );

    write!(writer, "{}", set.len())?;

    Ok(())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn sample1() {
        assert_judge!(process, "6", "4");
    }

    #[test]
    fn sample2() {
        assert_judge!(process, "63", "6");
    }

    #[test]
    fn sample3() {
        assert_judge!(process, "49", "3");
    }

    #[test]
    fn small4() {
        assert_judge!(process, "64", "6");
    }
}

yukicoder

結果

テストケース

ソースコード