#556392 (Nim) No.1234 典型RMQ

提出ソース

結果

問題	No.1234 典型RMQ
ユーザー	yuly3
提出日時	2020-09-21 13:57:41
言語	Nim (2.0.2)
結果	AC
実行時間	270 ms / 2,000 ms
コード長	4,980 bytes
コンパイル時間	5,142 ms
コンパイル使用メモリ	72,584 KB
実行使用メモリ	23,072 KB
最終ジャッジ日時	2023-08-08 19:04:18
合計ジャッジ時間	12,437 ms
ジャッジサーバーID （参考情報）	judge12 / judge15

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 4,380 KB
testcase_01	AC	2 ms 4,384 KB
testcase_02	AC	2 ms 4,380 KB
testcase_03	AC	2 ms 4,380 KB
testcase_04	AC	2 ms 4,384 KB
testcase_05	AC	1 ms 4,380 KB
testcase_06	AC	263 ms 19,628 KB
testcase_07	AC	216 ms 8,112 KB
testcase_08	AC	270 ms 21,104 KB
testcase_09	AC	244 ms 13,100 KB
testcase_10	AC	264 ms 21,520 KB
testcase_11	AC	259 ms 19,508 KB
testcase_12	AC	238 ms 12,900 KB
testcase_13	AC	209 ms 7,876 KB
testcase_14	AC	240 ms 12,712 KB
testcase_15	AC	229 ms 11,956 KB
testcase_16	AC	259 ms 20,948 KB
testcase_17	AC	231 ms 12,448 KB
testcase_18	AC	201 ms 7,660 KB
testcase_19	AC	270 ms 21,544 KB
testcase_20	AC	191 ms 21,828 KB
testcase_21	AC	251 ms 19,580 KB
testcase_22	AC	234 ms 22,288 KB
testcase_23	AC	234 ms 22,664 KB
testcase_24	AC	235 ms 22,400 KB
testcase_25	AC	235 ms 22,752 KB
testcase_26	AC	237 ms 23,072 KB
testcase_27	AC	1 ms 4,380 KB
testcase_28	AC	1 ms 4,384 KB
testcase_29	AC	2 ms 4,380 KB

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

raw source code

import algorithm, deques, heapqueue, math, sets, sequtils, strutils, sugar, tables

proc input*(): string =
    return stdin.readLine
proc chmax*[T: SomeNumber](num0: var T, num1: T) =
    num0 = max(num0, num1)
proc chmin*[T: SomeNumber](num0: var T, num1: T) =
    num0 = min(num0, num1)
proc `%=`*[T: SomeInteger](num0: var T, num1: T) =
    num0 = num0 mod num1

proc bit_length(n: Natural): Natural =
    const BIT_SIZE = 24
    if n == 0:
      return 0
    let s = toBin(n, BIT_SIZE)
    return BIT_SIZE - s.find('1')


type
    LazySegmentTree*[T, K] = ref object
        LV: Natural
        N0: Positive
        ide_ele: T
        lazy_ide_ele: K
        data: seq[T]
        lazy_data: seq[K]
        fold: proc (a, b: T): T
        eval: proc (a: T, b: K): T
        merge: proc (a, b: K): K

proc initLazySegmentTree*[T, K](size: Positive, ide_ele: T, lazy_ide_ele: K, fold: proc (a, b: T): T, eval: proc (a: T, b: K): T, merge: proc (a, b: K): K): LazySegmentTree[T, K] =
    var
        LV = bit_length(size - 1)
        N0 = 1 shl LV
        data = newSeqWith(2*N0, ide_ele)
        lazy_data = newSeqWith(2*N0, lazy_ide_ele)
    return LazySegmentTree[T, K](LV: LV, N0: N0, ide_ele: ide_ele, lazy_ide_ele: lazy_ide_ele, data: data, lazy_data: lazy_data, fold: fold, eval: eval, merge: merge)

proc toLazySegmentTree*[T, K](init_value: openArray[T], ide_ele: T, lazy_ide_ele: K, fold: proc (a, b: T): T, eval: proc (a: T, b: K): T, merge: proc (a, b: K): K): LazySegmentTree[T, K] =
    var
        LV = bit_length(init_value.len - 1)
        N0 = 1 shl LV
        data = newSeqWith(2*N0, ide_ele)
        lazy_data = newSeqWith(2*N0, lazy_ide_ele)
    for i, x in init_value:
        data[i + N0 - 1] = x
    for i in countdown(N0 - 2, 0):
        data[i] = fold(data[2*i + 1], data[2*i + 2])
    return LazySegmentTree[T, K](LV: LV, N0: N0, ide_ele: ide_ele, lazy_ide_ele: lazy_ide_ele, data: data, lazy_data: lazy_data, fold: fold, eval: eval, merge: merge)

iterator gindex*[T, K](self: var LazySegmentTree[T, K], left, right: Natural): Natural =
    var
        L = (left + self.N0) shr 1
        R = (right + self.N0) shr 1
        lc = if (left and 1) == 1: 0 else: bit_length(L and -L)
        rc = if (right and 1) == 1: 0 else: bit_length(R and -R)
    for i in 0..<self.LV:
        if rc <= i:
            yield R
        if L < R and lc <= i:
            yield L
        L = L shr 1
        R = R shr 1

proc propagates*[T, K](self: var LazySegmentTree[T, K], ids: seq[Natural]) =
    var
        idx: Natural
        v: K
    for id in reversed(ids):
        idx = id - 1
        v = self.lazy_data[idx]
        if v == self.lazy_ide_ele:
            continue
        # v = v shr 1
        self.data[2*idx + 1] = self.eval(self.data[2*idx + 1], v)
        self.data[2*idx + 2] = self.eval(self.data[2*idx + 2], v)
        self.lazy_data[2*idx + 1] = self.merge(self.lazy_data[2*idx + 1], v)
        self.lazy_data[2*idx + 2] = self.merge(self.lazy_data[2*idx + 2], v)
        self.lazy_data[idx] = self.lazy_ide_ele

proc update*[T, K](self: var LazySegmentTree[T, K], left, right: Natural, x: K) =
    let ids = toSeq(self.gindex(left, right))
    # self.propagates(ids)
    var
        L = left + self.N0
        R = right + self.N0
        # x = x
    
    while L < R:
        if (L and 1) == 1:
            self.lazy_data[L - 1] = self.merge(self.lazy_data[L - 1], x)
            self.data[L - 1] = self.eval(self.data[L - 1], x)
            inc L
        if (R and 1) == 1:
            dec R
            self.lazy_data[R - 1] = self.merge(self.lazy_data[R - 1], x)
            self.data[R - 1] = self.eval(self.data[R - 1], x)
        L = L shr 1
        R = R shr 1
        # x = x shl 1
    var idx: Natural
    for id in ids:
        idx = id - 1
        self.data[idx] = self.eval(self.fold(self.data[2*idx + 1], self.data[2*idx + 2]), self.lazy_data[idx])

proc query*[T, K](self: var LazySegmentTree[T, K], left, right: Natural): T =
    self.propagates(toSeq(self.gindex(left, right)))
    var
        L = left + self.N0
        R = right + self.N0
        res = self.ide_ele
    
    while L < R:
        if (L and 1) == 1:
            res = self.fold(res, self.data[L - 1])
            inc L
        if (R and 1) == 1:
            dec R
            res = self.fold(res, self.data[R - 1])
        L = L shr 1
        R = R shr 1
    return res


var
    a, ans: seq[int]
    lazy_seg_tree: LazySegmentTree[int, int]

proc solve() =
    let _ = input().parseInt
    a = input().split.map(parseInt)

    lazy_seg_tree = toLazySegmentTree(a, 10^18, 0, (a, b) => min(a, b), (a, b) => a + b, (a, b) => a + b)

    let Q = input().parseInt
    var ki, li, ri, ci: int
    for _ in 0..<Q:
        (ki, li, ri, ci) = input().split.map(parseInt)
        dec li
        if ki == 1:
            lazy_seg_tree.update(li, ri, ci)
        else:
            ans.add(lazy_seg_tree.query(li, ri))
    echo ans.join("\n")

when is_main_module:
    solve()

yukicoder

結果

テストケース

ソースコード