#826631 (Rust) No.5010 Better Mo's Algorithm is Needed!! (Unweighted)

提出ソース

結果

問題	No.5010 Better Mo's Algorithm is Needed!! (Unweighted)
ユーザー	rhoo
提出日時	2022-12-18 00:56:54
言語	Rust (1.77.0 + proconio)
結果	TLE
実行時間	-
コード長	8,537 bytes
コンパイル時間	2,791 ms
実行使用メモリ	24,768 KB
スコア	0
最終ジャッジ日時	2022-12-18 00:57:27
合計ジャッジ時間	20,785 ms
ジャッジサーバーID （参考情報）	judge11 / judge12

このコードへのチャレンジ
（要ログイン）

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	TLE	-
testcase_01	--	-
testcase_02	--	-
testcase_03	--	-
testcase_04	--	-
testcase_05	--	-
testcase_06	--	-
testcase_07	--	-
testcase_08	--	-
testcase_09	--	-
testcase_10	--	-
testcase_11	--	-
testcase_12	--	-
testcase_13	--	-
testcase_14	--	-
testcase_15	--	-
testcase_16	--	-
testcase_17	--	-
testcase_18	--	-
testcase_19	--	-
testcase_20	--	-
testcase_21	--	-
testcase_22	--	-
testcase_23	--	-
testcase_24	--	-
testcase_25	--	-
testcase_26	--	-
testcase_27	--	-
testcase_28	--	-
testcase_29	--	-
testcase_30	--	-
testcase_31	--	-
testcase_32	--	-
testcase_33	--	-
testcase_34	--	-
testcase_35	--	-
testcase_36	--	-
testcase_37	--	-
testcase_38	--	-
testcase_39	--	-
testcase_40	--	-
testcase_41	--	-
testcase_42	--	-
testcase_43	--	-
testcase_44	--	-
testcase_45	--	-
testcase_46	--	-
testcase_47	--	-
testcase_48	--	-
testcase_49	--	-
testcase_50	--	-
testcase_51	--	-
testcase_52	--	-
testcase_53	--	-
testcase_54	--	-
testcase_55	--	-
testcase_56	--	-
testcase_57	--	-
testcase_58	--	-
testcase_59	--	-
testcase_60	--	-
testcase_61	--	-
testcase_62	--	-
testcase_63	--	-
testcase_64	--	-
testcase_65	--	-
testcase_66	--	-
testcase_67	--	-
testcase_68	--	-
testcase_69	--	-
testcase_70	--	-
testcase_71	--	-
testcase_72	--	-
testcase_73	--	-
testcase_74	--	-
testcase_75	--	-
testcase_76	--	-
testcase_77	--	-
testcase_78	--	-
testcase_79	--	-
testcase_80	--	-
testcase_81	--	-
testcase_82	--	-
testcase_83	--	-
testcase_84	--	-
testcase_85	--	-
testcase_86	--	-
testcase_87	--	-
testcase_88	--	-
testcase_89	--	-
testcase_90	--	-
testcase_91	--	-
testcase_92	--	-
testcase_93	--	-
testcase_94	--	-
testcase_95	--	-
testcase_96	--	-
testcase_97	--	-
testcase_98	--	-
testcase_99	--	-
testcase_100	--	-
testcase_101	--	-
testcase_102	--	-
testcase_103	--	-
testcase_104	--	-
testcase_105	--	-
testcase_106	--	-
testcase_107	--	-
testcase_108	--	-
testcase_109	--	-
testcase_110	--	-
testcase_111	--	-
testcase_112	--	-
testcase_113	--	-
testcase_114	--	-
testcase_115	--	-
testcase_116	--	-
testcase_117	--	-
testcase_118	--	-
testcase_119	--	-

権限があれば一括ダウンロードができます

コンパイルメッセージ

warning: unused macro definition: `debug`
  --> Main.rs:88:14
   |
88 | macro_rules! debug{
   |              ^^^^^
   |
   = note: `#[warn(unused_macros)]` on by default

warning: unused macro definition: `param`
   --> Main.rs:152:14
    |
152 | macro_rules! param{
    |              ^^^^^

warning: unused import: `std::mem`
   --> Main.rs:203:5
    |
203 | use std::mem;
    |     ^^^^^^^^
    |
    = note: `#[warn(unused_imports)]` on by default

warning: field is never read: `st`
   --> Main.rs:218:5
    |
218 |     st:usize,
    |     ^^^^^^^^
    |
    = note: `#[warn(dead_code)]` on by default

warning: associated function is never used: `score`
   --> Main.rs:294:8
    |
294 |     fn score(&self)->i64{
    |        ^^^^^

warning: 5 warnings emitted

ソースコード

raw source code

#![allow(non_snake_case)]


#[allow(unused)]
mod rnd {
    static mut S:usize=88172645463325252;

    #[inline]
    pub fn next()->usize{
        unsafe{
            S^=S<<7;
            S^=S>>9;
            S
        }
    }
    
    #[inline]
    pub fn nextf()->f64{
        unsafe{
            std::mem::transmute::<_,f64>(0x3ff0000000000000|next()&0xfffffffffffff)-1.
        }
    }
    
    #[inline]
    pub fn range(a:usize,b:usize)->usize{
        next()%(b-a)+a
    }
    
    #[inline]
    pub fn exu(a:usize,b:usize,skip:usize)->usize{
        let ret=range(a,b-1);
        if ret==skip{b-1}
        else{ret}
    }

    #[inline]
    pub fn shuffle<T>(list:&mut [T]){
        for i in (0..list.len()).rev(){
            list.swap(i,next()%(i+1));
        }
    }
}


#[inline]
fn get_time_secs()->f64{
    std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_secs_f64()
}


struct Timer(f64);
impl Timer{
    #[inline]
    fn new()->Timer{
        Timer(get_time_secs())
    }

    #[inline]
    fn get_time(&self)->f64{
        get_time_secs()-self.0
    }
}


#[cfg(local)]
#[allow(unused)]
macro_rules! debug{
    ()=>{
        eprintln!();
    };
    ($x:literal)=>{
        eprintln!("{:?}",$x);
    };
    ($x:expr)=>{
        eprintln!("{}: {:?}",stringify!($x),$x);
    };
    ($x:literal,$($l:expr),*)=>{
        eprint!("{:?}, ",$x);
        debug!($($l),*);
    };
    ($x:expr,$($l:expr),*)=>{
        eprint!("{}: {:?}, ",stringify!($x),$x);
        debug!($($l),*);
    }
}

#[cfg(not(local))]
macro_rules! debug{
    ($($_:tt)*)=>{}
}


#[cfg(local)]
macro_rules! log{
    ()=>{};

    ($x:literal)=>{
        eprintln!("{}",$x);
    };
    
    ($x:ident $(,)?)=>{
        log!(@out $x,$x);
    };
    ($x:ident,$t:ident $(,)?)=>{
        log!(@out $x,$x);
        log!($t);
    };
    ($x:ident,$($_:ident).* $(,)?)=>{
        compile_error!();
    };
    ($x:ident,$t:expr $(,)?)=>{
        log!(@out $x,$t);
    };
    ($($x:ident).* $(,)?)=>{
        log!(@last $($x).*;$($x).*);
    };

    ($x:ident,$t:ident,$($rest:tt)*)=>{
        log!(@out $x,$x);
        log!($t,$($rest)*);
    };
    ($x:ident,$($_:ident).*,$($rest:tt)*)=>{
        compile_error!();
    };
    ($x:ident,$t:expr,$($rest:tt)*)=>{
        log!(@out $x,$t);
        log!($($rest)*);
    };
    ($($x:ident).*,$($rest:tt)*)=>{
        log!(@last $($x).*;$($x).*);
        log!($($rest)*);
    };

    (@out $x:ident,$t:expr)=>{
        eprintln!("{} = {:?}",stringify!($x),$t);
    };

    (@last $x:ident;$full:expr)=>{
        log!(@out $x,$full);
    };
    (@last $_:ident. $($rest:ident).*;$full:expr)=>{
        log!(@last $($rest).*;$full)
    }
}

#[cfg(not(local))]
macro_rules! log{
    ($($_:tt)*)=>{}
}


macro_rules! param{
    ($($x:ident:$t:ty=$v:literal),* $(,)?)=>{
        #[allow(non_snake_case)]
        struct Param{
            $($x:$t),*
        }
        impl Param{
            #[inline]
            fn new()->Self{
                Self{
                    $(
                        $x:match std::env::var(stringify!($x)){
                            Ok(s)=>s.parse().expect("parse error"),
                            Err(_)=>$v
                        }
                    ),*
                }
            }
        }
    };
}


#[allow(unused)]
struct Scanner{
    stack:std::str::SplitAsciiWhitespace<'static>
}
#[allow(unused)]
impl Scanner{
    #[inline]
    fn new()->Self{
        Self{stack:"".split_ascii_whitespace()}
    }

    #[inline]
    fn read<T:std::str::FromStr>(&mut self)->T{
        loop{
            if let Some(v)=self.stack.next(){
                return v.parse::<T>().unwrap_or_else(|_|panic!("{}: parse error",std::any::type_name::<T>()));
            }

            let mut tmp=String::new();
            std::io::stdin().read_line(&mut tmp).unwrap();
            assert!(!tmp.is_empty());
            self.stack=Box::leak(tmp.into_boxed_str()).split_ascii_whitespace();
        }
    }
}


use std::io::*;
use std::mem;
use std::cmp::Reverse;


const N:usize=200000;
const Q:usize=200000;


#[inline]
fn abs_diff(a:usize,b:usize)->usize{
    (a as i64-b as i64).abs() as usize
}


struct Out{
    st:usize,
    route:Vec<(usize,usize,usize)>
}
impl Out{
    #[inline]
    fn input()->Out{
        let mut scan=Scanner::new();
        let n:usize=scan.read();
        let q:usize=scan.read();
        let wt:usize=scan.read();
        let st:usize=scan.read();
        assert_eq!((n,q,wt),(N,Q,1));
        for _ in 0..n{
            scan.read::<usize>();
        }

        let mut route=Vec::with_capacity(Q);
        for i in 0..Q{
            let l:usize=scan.read();
            let r:usize=scan.read();
            route.push((l,r,i));
        }

        Out{st,route}
    }

    #[inline]
    fn greedy(&mut self){
        const D:usize=15;
        self.route[1..].sort_unstable();
        let mut block0=vec![Vec::with_capacity(Q/D);D];
        let w=Q/D;
        for i in 0..Q{
            block0[(i/w).min(D-1)].push(self.route[i]);
        }
        let mut block1=vec![vec![Vec::with_capacity(Q/(D*D));D];D];
        for i in 0..D{
            block0[i].sort_unstable_by_key(|(_,r,_)|*r);
            let w=block0[i].len()/D;
            for j in 0..block0[i].len(){
                block1[i][(j/w).min(D-1)].push(block0[i][j]);
            }
        }
        let mut blocks=Vec::with_capacity(D*D);
        for (i,b0) in block1.into_iter().enumerate(){
            for (j,b1) in b0.into_iter().enumerate(){
                blocks.push((i,j,b1));
            }
        }
        blocks.sort_unstable_by_key(|&(y,x,_)|{
            if D&1!=y&1{
                Reverse((y,!x))
            }
            else{
                Reverse((y,x))
            }
        });

        self.route.clear();
        for (_,_,mut block) in blocks{
            while !block.is_empty(){
                let arg_max=if self.route.is_empty(){
                    (0..block.len()).min_by_key(|&i|self.get_first(block[i])).unwrap()
                }
                else{
                    let last=self.route.last().unwrap().clone();
                    (0..block.len()).min_by_key(|&i|self.get(last,block[i])).unwrap()
                };
                self.route.push(block.swap_remove(arg_max));
            }
        }

        assert_eq!(self.route.len(),Q);
    }

    #[inline]
    fn score(&self)->i64{
        let mut ret=self.get_first(self.route[0]);

        for i in 1..self.route.len(){
            ret+=self.dist(i-1,i);
        }

        ret as i64
    }

    #[inline]
    fn get_first(&self,(l,r,_):(usize,usize,usize))->usize{
        l-r
    }

    #[inline]
    fn get(&self,(l0,r0,_):(usize,usize,usize),(l1,r1,_):(usize,usize,usize))->usize{
        abs_diff(l0,l1)+abs_diff(r0,r1)
    }

    #[inline]
    fn dist(&self,a:usize,b:usize)->usize{
        self.get(self.route[a],self.route[b])
    }

    #[inline]
    fn try_2opt(&self,a:usize,b:usize)->i64{
        let old=self.dist(a-1,a)+self.dist(b-1,b);
        let new=self.dist(a-1,b-1)+self.dist(a,b);
        (new-old) as i64
    }

    #[inline]
    fn apply_2opt(&mut self,a:usize,b:usize){
        self.route[a..b].reverse()
    }
}


const TL:f64=4.98;

fn hc(out:&mut Out,d:usize){
    for a in 1..Q-d{
        for b in a+2..a+d{
            let diff=out.try_2opt(a,b);
            if diff<=0{
                out.apply_2opt(a,b);
            }
        }
    }

    log!(score,out.score() as f64/1e6);
}

fn hc_with_timer(out:&mut Out,time:&Timer,d:usize){
    let mut iter=0;
    for a in 1..Q-d{
        for b in a+2..a+d{
            if iter&255==0 && time.get_time()>=TL{
                return;
            }
            iter+=1;
            let diff=out.try_2opt(a,b);
            if diff<=0{
                out.apply_2opt(a,b);
            }
        }
    }

    log!(score,out.score() as f64/1e6);
}


fn main(){
    let time=Timer::new();
    let mut out=Out::input();
    out.greedy();
    log!(init_score,out.score() as f64/1e6);

    hc(&mut out,1500);
    hc(&mut out,1500);
    hc(&mut out,1200);
    hc(&mut out,1200);
    hc_with_timer(&mut out,&time,600);
    hc_with_timer(&mut out,&time,600);
    hc_with_timer(&mut out,&time,300);
    hc_with_timer(&mut out,&time,300);
    hc_with_timer(&mut out,&time,300);
    hc_with_timer(&mut out,&time,1000);

    let stdout=stdout();
    let stdout=&mut BufWriter::new(stdout.lock());
    for (_,_,id) in &out.route{
        writeln!(stdout,"{}",id+1).unwrap();
    }
    stdout.flush().unwrap();
}

yukicoder

結果

テストケース

コンパイルメッセージ

ソースコード