#377100 (Rust) No.749 クエリ全部盛り

• 問題: No.749 クエリ全部盛り
• ユーザー: akakimidori
• 提出日時: 2019-09-07 12:15:57
• 言語: Rust (1.77.0 + proconio)
• 結果: CE (最新)
  AC
  (最初)
• 実行時間: -
• コード長: 8,529 bytes
• コンパイル時間: 13,493 ms
• コンパイル使用メモリ: 383,944 KB
• 最終ジャッジ日時: 2024-11-14 21:38:00
• 合計ジャッジ時間: 14,900 ms
• ジャッジサーバーID （参考情報）: judge2 / judge3

コンパイルメッセージ

error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `:`, `{`, or `|`, found `,`
 --> src/main.rs:5:20
  |
5 |     fn fold(Self::T, Self::T) -> Self::T;
  |                    ^ expected one of 9 possible tokens
  |
  = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
help: explicitly ignore the parameter name
  |
5 |     fn fold(_: Self::T, Self::T) -> Self::T;
  |             ~~~~~~~~~~

error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `:`, `{`, or `|`, found `)`
 --> src/main.rs:5:29
  |
5 |     fn fold(Self::T, Self::T) -> Self::T;
  |                             ^ expected one of 9 possible tokens
  |
  = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
help: explicitly ignore the parameter name
  |
5 |     fn fold(Self::T, _: Self::T) -> Self::T;
  |                      ~~~~~~~~~~

error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `:`, `{`, or `|`, found `,`
 --> src/main.rs:6:20
  |
6 |     fn eval(Self::T, Self::E) -> Self::T;
  |                    ^ expected one of 9 possible tokens
  |
  = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
help: explicitly ignore the parameter name
  |
6 |     fn eval(_: Self::T, Self::E) -> Self::T;
  |             ~~~~~~~~~~

error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `:`, `{`, or `|`, found `)`
 --> src/main.rs:6:29
  |
6 |     fn eval(Self::T, Self::E) -> Self::T;
  |                             ^ expected one of 9 possible tokens
  |
  = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
help: explicitly ignore the parameter name
  |
6 |     fn eval(Self::T, _: Self::E) -> Self::T;
  |                      ~~~~~~~~~~

error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `:`, `{`, or `|`, found `,`
 --> src/main.rs:7:21
  |
7 |     fn merge(Self::E, Self::E) -> Self::E;
  |                     ^ expected one of 9 possible tokens
  |
  = note: anonymous parameters are removed i

ソースコード

// ---------- begin Lazy Segment Tree ----------
pub trait TE {
    type T: Clone;
    type E: Clone;
    fn fold(Self::T, Self::T) -> Self::T;
    fn eval(Self::T, Self::E) -> Self::T;
    fn merge(Self::E, Self::E) -> Self::E;
    fn e() -> Self::T;
    fn id() -> Self::E;
}

pub struct LazySegmentTree<R: TE> {
    size: usize,
    bit: usize,
    a: Vec<(R::T, R::E)>,
}

impl <R: TE> LazySegmentTree<R> {
    pub fn new(n: usize) -> LazySegmentTree<R> {
        let mut bit = 0;
        while (1 << bit) < n {
            bit += 1;
        }
        LazySegmentTree {
            size: 1 << bit,
            bit: bit,
            a: vec![(R::e(), R::id()); 2 << bit],
        }
    }
    pub fn build_by(z: &[R::T]) -> LazySegmentTree<R> {
        let n = z.len();
        let mut bit = 0;
        while (1 << bit) < n {
            bit += 1;
        }
        let mut a = vec![(R::e(), R::id()); 2 << bit];
        for (a, z) in a[(1 << bit)..].iter_mut().zip(z.iter()) {
            a.0 = z.clone();
        }
        for i in (1..(1 << bit)).rev() {
            let l = R::eval(a[2 * i].0.clone(), a[2 * i].1.clone());
            let r = R::eval(a[2 * i + 1].0.clone(), a[2 * i + 1].1.clone());
            a[i].0 = R::fold(l, r);
        }
        LazySegmentTree {
            size: 1 << bit,
            bit : bit,
            a: a,
        }
    }
    fn eval(&self, k: usize) -> R::T {
        R::eval(self.a[k].0.clone(), self.a[k].1.clone())
    }
    fn propagate(&mut self, x: usize) {
        let x = x + self.size;
        for i in (1..(self.bit + 1)).rev() {
            let k = x >> i;
            self.a[2 * k].1 = R::merge(self.a[2 * k].1.clone(), self.a[k].1.clone());
            self.a[2 * k + 1].1 = R::merge(self.a[2 * k + 1].1.clone(), self.a[k].1.clone());
            self.a[k].1 = R::id();
            self.a[k].0 = R::fold(self.eval(2 * k), self.eval(2 * k + 1));
        }
    }
    fn save(&mut self, x: usize) {
        let x = x + self.size;
        for i in 1..(self.bit + 1) {
            let k = x >> i;
            self.a[k].0 = R::fold(self.eval(2 * k), self.eval(2 * k + 1));
        }
    }
    pub fn update(&mut self, l: usize, r: usize, op: R::E) {
        self.propagate(l);
        self.propagate(r - 1);
        let mut x = l + self.size;
        let mut y = r + self.size;
        while x < y {
            if x & 1 == 1 {
                self.a[x].1 = R::merge(self.a[x].1.clone(), op.clone());
                x += 1;
            }
            if y & 1 == 1 {
                y -= 1;
                self.a[y].1 = R::merge(self.a[y].1.clone(), op.clone());
            }
            x >>= 1;
            y >>= 1;
        }
        self.save(l);
        self.save(r - 1);
    }
    pub fn find(&mut self, l: usize, r: usize) -> R::T {
        self.propagate(l);
        self.propagate(r - 1);
        let mut x = l + self.size;
        let mut y = r + self.size;
        let mut p = R::e();
        let mut q = R::e();
        while x < y {
            if x & 1 == 1 {
                p = R::fold(p, self.eval(x));
                x += 1;
            }
            if y & 1 == 1 {
                y -= 1;
                q = R::fold(self.eval(y), q);
            }
            x >>= 1;
            y >>= 1;
        }
        R::fold(p, q)
    }
}
// ---------- end Lazy Segment Tree ----------
// ---------- begin ModInt ----------
const MOD: u32 = 1_000_000_007;

#[derive(Clone, Copy)]
struct ModInt(u32);

use std::ops::{Add, AddAssign, Sub, SubAssign, Mul, MulAssign, Neg};

impl Add for ModInt {
    type Output = ModInt;
    fn add(self, rhs: ModInt) -> Self::Output {
        let mut d = self.0 + rhs.0;
        if d >= MOD {
            d -= MOD;
        }
        ModInt(d)
    }
}

impl AddAssign for ModInt {
    fn add_assign(&mut self, rhs: ModInt) {
        *self = *self + rhs;
    }
}

impl Sub for ModInt {
    type Output = ModInt;
    fn sub(self, rhs: ModInt) -> Self::Output {
        let mut d = self.0 + MOD - rhs.0;
        if d >= MOD {
            d -= MOD;
        }
        ModInt(d)
    }
}

impl SubAssign for ModInt {
    fn sub_assign(&mut self, rhs: ModInt) {
        *self = *self - rhs;
    }
}

impl Mul for ModInt {
    type Output = ModInt;
    fn mul(self, rhs: ModInt) -> Self::Output {
        ModInt((self.0 as u64 * rhs.0 as u64 % MOD as u64) as u32)
    }
}

impl MulAssign for ModInt {
    fn mul_assign(&mut self, rhs: ModInt) {
        *self = *self * rhs;
    }
}

impl Neg for ModInt {
    type Output = ModInt;
    fn neg(self) -> Self::Output {
        ModInt(if self.0 == 0 {0} else {MOD - self.0})
    }
}

#[allow(dead_code)]
impl ModInt {
    pub fn new(n: u32) -> ModInt {
        ModInt(n % MOD)
    }
    pub fn zero() -> ModInt {
        ModInt(0)
    }
    pub fn one() -> ModInt {
        ModInt(1)
    }
    pub fn pow(self, mut n: u32) -> ModInt {
        let mut t = ModInt::one();
        let mut s = self;
        while n > 0 {
            if n & 1 == 1 {
                t *= s;
            }
            s *= s;
            n >>= 1;
        }
        t
    }
    pub fn inv(self) -> ModInt {
        self.pow(MOD - 2)
    }
    pub fn comb(n: u32, k: u32) -> ModInt {
        if k > n {
            return ModInt::zero();
        }
        let k = std::cmp::min(k, n - k);
        let mut nu = ModInt::one();
        let mut de = ModInt::one();
        for i in 0..k {
            nu *= ModInt(n - i);
            de *= ModInt(i + 1);
        }
        nu * de.inv()
    }
}

struct Precalc {
    inv: Vec<ModInt>,
    fact: Vec<ModInt>,
    ifact: Vec<ModInt>,
}

#[allow(dead_code)]
impl Precalc {
    pub fn new(n: usize) -> Precalc {
        let mut inv = vec![ModInt::one(); n + 1];
        let mut fact = vec![ModInt::one(); n + 1];
        let mut ifact = vec![ModInt::one(); n + 1];
        for i in 2..(n + 1) {
            inv[i] = -inv[MOD as usize % i] * ModInt(MOD / i as u32);
            fact[i] = fact[i - 1] * ModInt(i as u32);
            ifact[i] = ifact[i - 1] * inv[i];
        }
        Precalc {
            inv: inv,
            fact: fact,
            ifact: ifact,
        }
    }
    pub fn inv(&self, n: usize) -> ModInt {
        self.inv[n]
    }
    pub fn fact(&self, n: usize) -> ModInt {
        self.fact[n]
    }
    pub fn ifact(&self, n: usize) -> ModInt {
        self.ifact[n]
    }
    pub fn comb(&self, n: usize, k: usize) -> ModInt {
        if k > n {
            return ModInt::zero();
        }
        self.fact[n] * self.ifact[k] * self.ifact[n - k]
    }
}
// ---------- end ModInt ----------

struct R;
impl TE for R {
    type T = (ModInt, ModInt, ModInt);
    type E = (ModInt, ModInt, ModInt);
    fn fold(l: Self::T, r: Self::T) -> Self::T {
        (l.0 + r.0, l.1 + r.1, l.2 + r.2)
    }
    fn eval(a: Self::T, f: Self::E) -> Self::T {
        (a.0 * f.0 + f.1 * a.1 + f.2 * a.2, a.1, a.2)
    }
    fn merge(f: Self::E, g: Self::E) -> Self::E {
        (f.0 * g.0, f.1 * g.0 + g.1, f.2 * g.0 + g.2)
    }
    fn e() -> Self::T {
        (ModInt::zero(), ModInt::zero(), ModInt::zero())
    }
    fn id() -> Self::E {
        (ModInt::one(), ModInt::zero(), ModInt::zero())
    }
}

use std::io::{Read, Write};

fn run() {
    let mut s = String::new();
    std::io::stdin().read_to_string(&mut s).unwrap();
    let mut it = s.trim().split_whitespace();
    let n: usize = it.next().unwrap().parse().unwrap();
    let q: usize = it.next().unwrap().parse().unwrap();
    let mut z = vec![(ModInt(0), ModInt(1), ModInt(0)); n + 1];
    z[1].2 = ModInt::one();
    for i in 2..n {
        z[i].2 = z[i - 1].2 + z[i - 2].2;
    }
    let mut s = LazySegmentTree::<R>::build_by(&z);
    let out = std::io::stdout();
    let mut out = std::io::BufWriter::new(out.lock());
    for _ in 0..q {
        let q: u8 = it.next().unwrap().parse().unwrap();
        let l: usize = it.next().unwrap().parse().unwrap();
        let r: usize = it.next().unwrap().parse().unwrap();
        let k: u32 = it.next().unwrap().parse().unwrap();
        match q {
            0 => {
                let (s, _, _) = s.find(l, r + 1);
                let ans = s * ModInt(k);
                writeln!(out, "{}", ans.0).unwrap();
            },
            1 => s.update(l, r + 1, (ModInt(0), ModInt(k), ModInt(0))),
            2 => s.update(l, r + 1, (ModInt(1), ModInt(k), ModInt(0))),
            3 => s.update(l, r + 1, (ModInt(k), ModInt(0), ModInt(0))),
            _ => s.update(l, r + 1, (ModInt(1), ModInt(0), ModInt(k))),
        }
    }
}

fn main() {
    run();
}