#828783 (Rust) No.1000 Point Add and Array Add

提出ソース

結果

問題	No.1000 Point Add and Array Add
ユーザー	phspls
提出日時	2022-12-28 02:26:42
言語	Rust (1.77.0 + proconio)
結果	AC
実行時間	289 ms / 2,000 ms
コード長	4,614 bytes
コンパイル時間	14,659 ms
コンパイル使用メモリ	377,920 KB
実行使用メモリ	33,408 KB
最終ジャッジ日時	2024-05-02 04:43:34
合計ジャッジ時間	19,867 ms
ジャッジサーバーID （参考情報）	judge4 / judge1

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 5,248 KB
testcase_01	AC	1 ms 5,376 KB
testcase_02	AC	1 ms 5,376 KB
testcase_03	AC	1 ms 5,376 KB
testcase_04	AC	1 ms 5,376 KB
testcase_05	AC	1 ms 5,376 KB
testcase_06	AC	1 ms 5,376 KB
testcase_07	AC	1 ms 5,376 KB
testcase_08	AC	1 ms 5,376 KB
testcase_09	AC	1 ms 5,376 KB
testcase_10	AC	1 ms 5,376 KB
testcase_11	AC	1 ms 5,376 KB
testcase_12	AC	2 ms 5,376 KB
testcase_13	AC	2 ms 5,376 KB
testcase_14	AC	2 ms 5,376 KB
testcase_15	AC	2 ms 5,376 KB
testcase_16	AC	174 ms 27,520 KB
testcase_17	AC	153 ms 18,816 KB
testcase_18	AC	265 ms 33,280 KB
testcase_19	AC	289 ms 33,408 KB
testcase_20	AC	168 ms 24,608 KB
testcase_21	AC	278 ms 28,672 KB
testcase_22	AC	230 ms 33,152 KB
testcase_23	AC	279 ms 33,408 KB

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コンパイルメッセージ

warning: variable does not need to be mutable
   --> src/main.rs:111:9
    |
111 |     let mut a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    |         ----^
    |         |
    |         help: remove this `mut`
    |
    = note: `#[warn(unused_mut)]` on by default

warning: field `orgn` is never read
 --> src/main.rs:5:5
  |
3 | struct LazySegmentTree<F, G, H, T, U> {
  |        --------------- field in this struct
4 |     n: usize,
5 |     orgn: usize,
  |     ^^^^
  |
  = note: `LazySegmentTree` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
  = note: `#[warn(dead_code)]` on by default

warning: method `update_closed` is never used
  --> src/main.rs:46:8
   |
15 | / impl<F, G, H, T, U> LazySegmentTree<F, G, H, T, U> where
16 | | T: std::fmt::Debug + Copy,
17 | | U: std::fmt::Debug + std::cmp::PartialEq + Copy,
18 | | F: Fn(T, T) -> T,
19 | | G: Fn(T, U) -> T,
20 | | H: Fn(U, U) -> U,
   | |_________________- method in this implementation
...
46 |       fn update_closed(&mut self, left: usize, right: usize, val: U) {
   |          ^^^^^^^^^^^^^

ソースコード

raw source code

#[derive(Debug, Clone)]
struct LazySegmentTree<F, G, H, T, U> {
    n: usize,
    orgn: usize,
    unit: T,
    mem: Vec<T>,
    lazy_unit: U,
    lazy: Vec<U>,
    operator: F,
    mapper: G,
    composer: H,
}

impl<F, G, H, T, U> LazySegmentTree<F, G, H, T, U> where
T: std::fmt::Debug + Copy,
U: std::fmt::Debug + std::cmp::PartialEq + Copy,
F: Fn(T, T) -> T,
G: Fn(T, U) -> T,
H: Fn(U, U) -> U,
{
    fn new(n: usize, unit: T, lazy_unit: U, operator: F, mapper: G, composer: H) -> Self {
        let mut size = 1usize;
        while size < n { size *= 2; }
        Self {
            n: size,
            orgn: n,
            unit: unit,
            mem: vec![unit; size*2-1],
            lazy_unit: lazy_unit,
            lazy: vec![lazy_unit; size*2-1],
            operator: operator,
            mapper: mapper,
            composer: composer,
        }
    }

    fn find_closed(&mut self, l: usize, r: usize) -> T {
        self.find(l, r+1)
    }

    fn find(&mut self, l: usize, r: usize) -> T {
        self._find(l, r, 0, 0, self.n)
    }

    fn update_closed(&mut self, left: usize, right: usize, val: U) {
        self.update(left, right+1, val);
    }

    fn update(&mut self, left: usize, right: usize, val: U) {
        self._update(left, right, val, 0, 0, self.n);
    }

    fn get(&mut self, pos: usize) -> T {
        self.find_closed(pos, pos)
    }

    fn _evaluate(&mut self, k: usize) {
        if self.lazy[k] == self.lazy_unit { return; }
        if k < self.n-1 {
            let left = self._left(k);
            let right = self._right(k);
            self.lazy[left] = (self.composer)(self.lazy[left], self.lazy[k]);
            self.lazy[right] = (self.composer)(self.lazy[right], self.lazy[k]);
        }
        self.mem[k] = (self.mapper)(self.mem[k], self.lazy[k]);
        self.lazy[k] = self.lazy_unit;
    }
    fn _find(&mut self, a: usize, b: usize, nodenum: usize, l: usize, r: usize) -> T {
        self._evaluate(nodenum);
        if r <= a || b <= l {
            self.unit
        } else if a <= l && r <= b {
            self.mem[nodenum]
        } else {
            let left = self._find(a, b, self._left(nodenum), l, (l+r)/2);
            let right = self._find(a, b, self._right(nodenum), (l+r)/2, r);
            (self.operator)(left, right)
        }
    }
    fn _update(&mut self, a: usize, b: usize, x: U, nodenum: usize, l: usize, r: usize) {
        self._evaluate(nodenum);
        if a <= l && r <= b {
            self.lazy[nodenum] = (self.composer)(self.lazy[nodenum], x);
            self._evaluate(nodenum);
        } else if a < r && l < b {
            self._update(a, b, x, self._left(nodenum), l, (l + r) / 2);
            self._update(a, b, x, self._right(nodenum), (l + r) / 2, r);
            self.mem[nodenum] = (self.operator)(self.mem[self._left(nodenum)], self.mem[self._right(nodenum)]);
        }
    }
    fn _left(&self, k: usize) -> usize {
        2*k+1
    }
    fn _right(&self, k: usize) -> usize {
        2*k+2
    }
    fn _parent(&self, k: usize) -> usize {
        (k-1)/2
    }
}

fn main() {
    let mut nq = String::new();
    std::io::stdin().read_line(&mut nq).ok();
    let nq: Vec<usize> = nq.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let n = nq[0];
    let q = nq[1];
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let mut a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let queries = (0..q).map(|_| {
            let mut temp = String::new();
            std::io::stdin().read_line(&mut temp).ok();
            let temp: Vec<&str> = temp.trim().split_whitespace().collect();
            (temp[0].chars().nth(0).unwrap(), temp[1].parse::<usize>().unwrap(), temp[2].parse::<usize>().unwrap())
        })
        .collect::<Vec<_>>();

    let mut total = vec![0isize; n];
    for &(c, x, y) in queries.iter() {
        if c == 'B' {
            total[x-1] += 1;
            if y < n {
                total[y] -= 1;
            }
        }
    }
    for i in 0..n-1 {
        total[i+1] += total[i];
    }
    let mut b = (0..n).map(|i| a[i] * total[i] as usize).collect::<Vec<_>>();
    let mut segtree = LazySegmentTree::new(n, 0usize, 0usize, |x, y| x + y, |x, y| x+y, |x, y| x+y);
    for &(c, x, y) in queries.iter() {
        let x = x-1;
        if c == 'A' {
            let cnt = segtree.get(x);
            b[x] += (total[x] as usize - cnt) * y;
        } else {
            segtree.update(x, y, 1);
        }
    }
    println!("{}", b.iter().map(|v| v.to_string()).collect::<Vec<_>>().join(" "));
}

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結果

テストケース

コンパイルメッセージ

ソースコード