#150656 (Rust) No.447 ゆきこーだーの雨と雪 (2)

• 問題: No.447 ゆきこーだーの雨と雪 (2)
• ユーザー: tanzaku
• 提出日時: 2017-02-17 00:51:12
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 13 ms / 2,000 ms
• コード長: 2,769 bytes
• コンパイル時間: 11,975 ms
• コンパイル使用メモリ: 385,420 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-06-09 13:09:59
• 合計ジャッジ時間: 13,713 ms
• ジャッジサーバーID （参考情報）: judge5 / judge1

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; 5,248 KB
testcase_02	AC	1 ms; 5,248 KB
testcase_03	AC	2 ms; 5,376 KB
testcase_04	AC	2 ms; 5,376 KB
testcase_05	AC	7 ms; 5,376 KB
testcase_06	AC	10 ms; 5,376 KB
testcase_07	AC	5 ms; 5,376 KB
testcase_08	AC	6 ms; 5,376 KB
testcase_09	AC	9 ms; 5,376 KB
testcase_10	AC	2 ms; 5,376 KB
testcase_11	AC	3 ms; 5,376 KB
testcase_12	AC	4 ms; 5,376 KB
testcase_13	AC	9 ms; 5,376 KB
testcase_14	AC	12 ms; 5,376 KB
testcase_15	AC	3 ms; 5,376 KB
testcase_16	AC	3 ms; 5,376 KB
testcase_17	AC	3 ms; 5,376 KB
testcase_18	AC	2 ms; 5,376 KB
testcase_19	AC	13 ms; 5,376 KB
testcase_20	AC	11 ms; 5,376 KB
testcase_21	AC	3 ms; 5,376 KB
testcase_22	AC	2 ms; 5,376 KB
testcase_23	AC	3 ms; 5,376 KB
testcase_24	AC	8 ms; 5,376 KB
testcase_25	AC	10 ms; 5,376 KB
testcase_26	AC	5 ms; 5,376 KB
testcase_27	AC	5 ms; 5,376 KB

コンパイルメッセージ

warning: variable does not need to be mutable
  --> src/main.rs:81:13
   |
81 |         let mut competitor = competitors.get_mut(&name).unwrap();
   |             ----^^^^^^^^^^
   |             |
   |             help: remove this `mut`
   |
   = note: `#[warn(unused_mut)]` on by default

ソースコード

// use std::cmp;
use std::cmp::Ordering;
use std::collections::HashMap;

fn get_line() -> Vec<String> {
    let stdin = std::io::stdin();
    let mut s = String::new();
    loop {
        stdin.read_line(&mut s).ok();
        let s = s.trim();
        if s.len() != 0 {
            // println!("show: {}", s);
            return s.split_whitespace().map(|s| s.into()).collect();
        }
    }
}

struct Competitor {
    name: String,
    score: Vec<i32>,
    sum_score: i32,
    update_time: i32,
}

impl Competitor {
    fn new(name: &str, n: usize) -> Competitor {
        Competitor {
            name: name.into(),
            score: vec![0; n],
            // score: Vec::with_capacity(n),
            sum_score: 0,
            update_time: 0,
        }
    }
}

// http://stackoverflow.com/questions/29884402/how-do-i-implement-ord-for-a-struct
impl Ord for Competitor {
    fn cmp(&self, rhs: &Self) -> Ordering {
        let cmp = self.sum_score.cmp(&rhs.sum_score);
        if cmp == Ordering::Equal {
            rhs.update_time.cmp(&self.update_time)
        } else {
            cmp
        }
    }
}
impl PartialOrd for Competitor {
    fn partial_cmp(&self, rhs: &Self) -> Option<Ordering> {
        Some(self.cmp(rhs))
    }
}
impl PartialEq for Competitor {
    fn eq(&self, rhs: &Self) -> bool {
        self.sum_score == rhs.sum_score
    }
}
impl Eq for Competitor { }

fn main() {
    let n: usize = get_line()[0].parse().unwrap();
    let levels: Vec<f64> = get_line().iter().map(|l| l.parse().unwrap()).collect();
    assert_eq!(n, levels.len());

    let t: i32 = get_line()[0].parse().unwrap();
    let mut accepted: Vec<f64> = vec![0.0; n];
    // let mut accepted: [i32; n];
    let mut competitors = HashMap::new();

    for times in 0..t {
        let words = get_line();
        let name = words[0].to_string();
        let p = (words[1].chars().nth(0).unwrap() as usize) - ('A' as usize);
        if !competitors.contains_key(&name) {
            competitors.insert(name.to_string(), Competitor::new(&name, n));
        }
        accepted[p] += 1.0;
        let lv = levels[p];
        let solve_score = (50.0 * lv + 50.0 * lv / (0.8 + 0.2 * accepted[p])).floor() as i32;
        let mut competitor = competitors.get_mut(&name).unwrap();
        competitor.score[p] = solve_score;
        competitor.sum_score += solve_score;
        competitor.update_time = times;
    }

    let mut competitors_vec: Vec<_> = competitors.values().collect();
    competitors_vec.sort();
    competitors_vec.reverse();

    for i in 0..competitors_vec.len() {
        let c = competitors_vec[i];
        print!("{} {}", i+1, c.name);
        for i in 0..n {
            print!(" {}", c.score[i]);
        }
        println!(" {}", c.sum_score);
    }
}