結果

問題 No.5017 Tool-assisted Shooting
ユーザー tipstar0125
提出日時 2023-07-16 14:53:42
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 34 ms / 2,000 ms
コード長 5,029 bytes
コンパイル時間 1,227 ms
コンパイル使用メモリ 156,072 KB
実行使用メモリ 24,504 KB
スコア 8
平均クエリ数 82.69
最終ジャッジ日時 2023-07-16 14:53:52
合計ジャッジ時間 8,411 ms
ジャッジサーバーID
（参考情報） 		judge13 / judge15
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ファイルパターン 結果
other AC * 100
権限があれば一括ダウンロードができます

ソースコード

diff # 

#![allow(non_snake_case)]
#![allow(unused_imports)]
#![allow(unused_macros)]
#![allow(clippy::comparison_chain)]
#![allow(clippy::nonminimal_bool)]
#![allow(clippy::neg_multiply)]
#![allow(clippy::type_complexity)]
#![allow(clippy::needless_range_loop)]
#![allow(dead_code)]

use std::{
    cmp::Reverse,
    collections::{BTreeMap, BTreeSet, BinaryHeap, VecDeque},
};

mod rnd {
    static mut S: usize = 0;
    static MAX: usize = 1e9 as usize;

    #[inline]
    pub fn init(seed: usize) {
        unsafe {
            if seed == 0 {
                let t = std::time::SystemTime::now()
                    .duration_since(std::time::UNIX_EPOCH)
                    .unwrap()
                    .as_secs() as usize;
                S = t
            } else {
                S = seed;
            }
        }
    }
    #[inline]
    pub fn gen() -> usize {
        unsafe {
            if S == 0 {
                init(0);
            }
            S ^= S << 7;
            S ^= S >> 9;
            S
        }
    }
    #[inline]
    pub fn gen_range(a: usize, b: usize) -> usize {
        gen() % (b - a) + a
    }
    #[inline]
    pub fn gen_bool() -> bool {
        gen() & 1 == 1
    }
    #[inline]
    pub fn gen_range_isize(a: usize) -> isize {
        let mut x = (gen() % a) as isize;
        if gen_bool() {
            x *= -1;
        }
        x
    }
    #[inline]
    pub fn gen_range_neg_wrapping(a: usize) -> usize {
        let mut x = gen() % a;
        if gen_bool() {
            x = x.wrapping_neg();
        }
        x
    }
    #[inline]
    pub fn gen_float() -> f64 {
        ((gen() % MAX) as f64) / MAX as f64
    }
}

#[derive(Debug, Clone)]
struct TimeKeeper {
    start_time: std::time::Instant,
    time_threshold: f64,
}

impl TimeKeeper {
    fn new(time_threshold: f64) -> Self {
        TimeKeeper {
            start_time: std::time::Instant::now(),
            time_threshold,
        }
    }
    #[inline]
    fn isTimeOver(&self) -> bool {
        let elapsed_time = self.start_time.elapsed().as_nanos() as f64 * 1e-9;
        #[cfg(feature = "local")]
        {
            elapsed_time * 1.5 >= self.time_threshold
        }
        #[cfg(not(feature = "local"))]
        {
            elapsed_time >= self.time_threshold
        }
    }
    #[inline]
    fn get_time(&self) -> f64 {
        let elapsed_time = self.start_time.elapsed().as_nanos() as f64 * 1e-9;
        #[cfg(feature = "local")]
        {
            elapsed_time * 1.5
        }
        #[cfg(not(feature = "local"))]
        {
            elapsed_time
        }
    }
}

const H: usize = 60;
const W: usize = 25;
const TURN: usize = 1000;

#[derive(Debug, Clone)]
struct State {
    pos: usize,
    level: usize,
    enemy: [[(usize, usize); W]; H],
    turn: usize,
}

impl State {
    fn new() -> Self {
        State {
            pos: 12,
            level: 1,
            enemy: [[(0, 0); W]; H],
            turn: 0,
        }
    }
    fn update_enemy(&mut self, HPX: Vec<(usize, usize, usize)>) {
        for i in 1..H {
            self.enemy[i - 1] = self.enemy[i];
        }
        let mut new_enemy = [(0, 0); W];
        for (h, p, x) in HPX {
            new_enemy[x] = (h, p);
        }
        self.enemy[H - 1] = new_enemy;
    }
    fn move_me(&mut self) -> usize {
        let r_enemy = self.enemy[0][(self.pos + 1) % W];
        let l_enemy = self.enemy[0][(W + self.pos - 1) % W];
        if r_enemy == (0, 0) {
            self.pos = (self.pos + 1) % W;
            return 2;
        }
        if l_enemy == (0, 0) {
            self.pos = (W + self.pos - 1) % W;
            return 1;
        }
        return 0;
    }
    fn is_done(&self) -> bool {
        self.turn == TURN
    }
}

#[derive(Default)]
struct Solver {}
impl Solver {
    fn solve(&mut self) {
        let mut state = State::new();

        while !state.is_done() {
            let N: isize = read();
            if N == -1 {
                return;
            }
            state.turn += 1;

            let mut HPX = vec![];
            for _ in 0..N {
                let v: Vec<usize> = read_vec();
                let h = v[0];
                let p = v[1];
                let x = v[2];
                HPX.push((h, p, x));
            }
            state.update_enemy(HPX);
            let c = state.move_me();
            if c == 0 {
                println!("S");
            } else if c == 1 {
                println!("L");
            } else {
                println!("R");
            }
        }
    }
}

fn main() {
    std::thread::Builder::new()
        .stack_size(128 * 1024 * 1024)
        .spawn(|| Solver::default().solve())
        .unwrap()
        .join()
        .unwrap();
}

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()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}
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