結果

問題 No.1701 half price
ユーザー manta1130manta1130
提出日時 2021-11-04 14:18:28
言語 Rust
(1.77.0)
結果
AC  
実行時間 106 ms / 3,000 ms
コード長 5,307 bytes
コンパイル時間 2,119 ms
コンパイル使用メモリ 187,776 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-04-22 12:56:55
合計ジャッジ時間 2,898 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
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
6,816 KB
testcase_01 AC 1 ms
6,816 KB
testcase_02 AC 12 ms
6,940 KB
testcase_03 AC 0 ms
6,940 KB
testcase_04 AC 12 ms
6,944 KB
testcase_05 AC 1 ms
6,940 KB
testcase_06 AC 104 ms
6,940 KB
testcase_07 AC 106 ms
6,940 KB
testcase_08 AC 1 ms
6,940 KB
testcase_09 AC 1 ms
6,940 KB
testcase_10 AC 1 ms
6,940 KB
testcase_11 AC 1 ms
6,940 KB
testcase_12 AC 0 ms
6,944 KB
testcase_13 AC 1 ms
6,940 KB
testcase_14 AC 1 ms
6,940 KB
testcase_15 AC 1 ms
6,944 KB
testcase_16 AC 0 ms
6,940 KB
testcase_17 AC 43 ms
6,944 KB
testcase_18 AC 1 ms
6,944 KB
testcase_19 AC 2 ms
6,944 KB
testcase_20 AC 1 ms
6,940 KB
testcase_21 AC 105 ms
6,944 KB
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コンパイルメッセージ
warning: unused variable: `n`
  --> main.rs:11:9
   |
11 |         n:usize,w:i64
   |         ^
   |
help: `n` is captured in macro and introduced a unused variable
  --> main.rs:69:17
   |
10 | /     inputv! {
11 | |         n:usize,w:i64
12 | |     }
   | |_____- in this macro invocation
...
69 |               let $x: $t = buf_split_result.parse().unwrap();
   |                   ^^
   = note: `#[warn(unused_variables)]` on by default
   = note: this warning originates in the macro `input_internal` which comes from the expansion of the macro `inputv` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: 1 warning emitted

ソースコード

diff #

#[allow(unused_imports)]
use std::io::{stdout, BufWriter, Write};

use std::collections::HashSet;

fn main() {
    let out = stdout();
    let mut out = BufWriter::new(out.lock());

    inputv! {
        n:usize,w:i64
    }
    let a = input_vector::<i64>();
    let mut set = HashSet::new();
    let mut ans = 0;
    for mut i in 0..3_usize.pow(a.len() as u32) {
        let mut buf = 0;
        let mut k = 0;
        for j in 0..a.len() {
            if i % 3 == 1 {
                buf += a[j];
                k = (k << 1) + 1;
            } else if i % 3 == 2 {
                buf += a[j] / 2;
                k = (k << 1) + 1;
            } else {
                k <<= 1;
            }
            i /= 3;
        }

        if buf == w && !set.contains(&k) && k != 0 {
            ans += 1;
            set.insert(k);
        }
    }
    writeln!(out, "{}", ans).unwrap();
}

//https://github.com/manta1130/competitive-template-rs

use input::*;

pub mod input {
    use std::cell::RefCell;
    use std::io;
    pub const SPLIT_DELIMITER: char = ' ';
    pub use std::io::prelude::*;

    thread_local! {
        pub static INPUT_BUFFER:RefCell<std::collections::VecDeque<String>>=RefCell::new(std::collections::VecDeque::new());
    }

    #[macro_export]
    macro_rules! input_internal {
        ($x:ident : $t:ty) => {
            INPUT_BUFFER.with(|p| {
                if p.borrow().len() == 0 {
                    let temp_str = input_line_str();
                    let mut split_result_iter = temp_str
                        .split(SPLIT_DELIMITER)
                        .map(|q| q.to_string())
                        .collect::<std::collections::VecDeque<_>>();
                    p.borrow_mut().append(&mut split_result_iter)
                }
            });
            let mut buf_split_result = String::new();
            INPUT_BUFFER.with(|p| buf_split_result = p.borrow_mut().pop_front().unwrap());
            let $x: $t = buf_split_result.parse().unwrap();
        };
        (mut $x:ident : $t:ty) => {
            INPUT_BUFFER.with(|p| {
                if p.borrow().len() == 0 {
                    let temp_str = input_line_str();
                    let mut split_result_iter = temp_str
                        .split(SPLIT_DELIMITER)
                        .map(|q| q.to_string())
                        .collect::<std::collections::VecDeque<_>>();
                    p.borrow_mut().append(&mut split_result_iter)
                }
            });
            let mut buf_split_result = String::new();
            INPUT_BUFFER.with(|p| buf_split_result = p.borrow_mut().pop_front().unwrap());
            let mut $x: $t = buf_split_result.parse().unwrap();
        };
    }

    pub fn input_buffer_is_empty() -> bool {
        let mut empty = false;
        INPUT_BUFFER.with(|p| {
            if p.borrow().len() == 0 {
                empty = true;
            }
        });
        empty
    }

    #[macro_export]
    macro_rules! inputv {
    ($i:ident : $t:ty) => {
        input_internal!{$i : $t}
    };
    (mut $i:ident : $t:ty) => {
        input_internal!{mut $i : $t}
    };
    ($i:ident : $t:ty $(,)*) => {
            input_internal!{$i : $t}
    };
    (mut $i:ident : $t:ty $(,)*) => {
            input_internal!{mut $i : $t}
    };
    (mut $i:ident : $t:ty,$($q:tt)*) => {
            input_internal!{mut $i : $t}
            inputv!{$($q)*}
    };
    ($i:ident : $t:ty,$($q:tt)*) => {
            input_internal!{$i : $t}
            inputv!{$($q)*}
    };
}

    pub fn input_all() {
        INPUT_BUFFER.with(|p| {
            if p.borrow().len() == 0 {
                let mut temp_str = String::new();
                std::io::stdin().read_to_string(&mut temp_str).unwrap();
                let mut split_result_iter = temp_str
                    .split_whitespace()
                    .map(|q| q.to_string())
                    .collect::<std::collections::VecDeque<_>>();
                p.borrow_mut().append(&mut split_result_iter)
            }
        });
    }

    pub fn input_line_str() -> String {
        let mut s = String::new();
        io::stdin().read_line(&mut s).unwrap();
        s.trim().to_string()
    }

    #[allow(clippy::match_wild_err_arm)]
    pub fn input_vector<T>() -> Vec<T>
    where
        T: std::str::FromStr,
    {
        let mut v: Vec<T> = Vec::new();

        let s = input_line_str();
        let split_result = s.split(SPLIT_DELIMITER);
        for z in split_result {
            let buf = match z.parse() {
                Ok(r) => r,
                Err(_) => panic!("Parse Error",),
            };
            v.push(buf);
        }
        v
    }

    #[allow(clippy::match_wild_err_arm)]
    pub fn input_vector_row<T>(n: usize) -> Vec<T>
    where
        T: std::str::FromStr,
    {
        let mut v = Vec::with_capacity(n);
        for _ in 0..n {
            let buf = match input_line_str().parse() {
                Ok(r) => r,
                Err(_) => panic!("Parse Error",),
            };
            v.push(buf);
        }
        v
    }

    pub trait ToCharVec {
        fn to_charvec(&self) -> Vec<char>;
    }

    impl ToCharVec for String {
        fn to_charvec(&self) -> Vec<char> {
            self.to_string().chars().collect::<Vec<_>>()
        }
    }
}
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