結果

問題 No.878 Range High-Element Query
ユーザー 👑 seekworserseekworser
提出日時 2024-06-17 21:59:20
言語 Nim
(2.0.2)
結果
AC  
実行時間 151 ms / 2,000 ms
コード長 5,251 bytes
コンパイル時間 5,399 ms
コンパイル使用メモリ 67,060 KB
実行使用メモリ 16,532 KB
最終ジャッジ日時 2024-06-17 21:59:32
合計ジャッジ時間 8,511 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge3
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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 2 ms
6,816 KB
testcase_01 AC 3 ms
6,812 KB
testcase_02 AC 2 ms
6,816 KB
testcase_03 AC 2 ms
6,944 KB
testcase_04 AC 2 ms
6,944 KB
testcase_05 AC 2 ms
6,940 KB
testcase_06 AC 2 ms
6,940 KB
testcase_07 AC 2 ms
6,940 KB
testcase_08 AC 3 ms
6,944 KB
testcase_09 AC 3 ms
6,940 KB
testcase_10 AC 2 ms
6,944 KB
testcase_11 AC 132 ms
15,488 KB
testcase_12 AC 93 ms
14,080 KB
testcase_13 AC 105 ms
11,648 KB
testcase_14 AC 80 ms
10,240 KB
testcase_15 AC 95 ms
13,824 KB
testcase_16 AC 129 ms
16,256 KB
testcase_17 AC 138 ms
16,532 KB
testcase_18 AC 151 ms
16,384 KB
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ソースコード

diff # 

import macros;macro ImportExpand(s:untyped):untyped = parseStmt($s[2])
# verification-helper: PROBLEM https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=3382
ImportExpand "cplib/collections/segtree.nim" <=== "when not declared CPLIB_COLLECTIONS_SEGTREE:\n    const CPLIB_COLLECTIONS_SEGTREE* = 1\n    import algorithm\n    import strutils\n    type SegmentTree*[T] = ref object\n        default: T\n        merge: proc(x: T, y: T): T\n        arr*: seq[T]\n        lastnode: int\n        length: int\n    proc initSegmentTree*[T](v: seq[T], merge: proc(x: T, y: T): T, default: T): SegmentTree[T] =\n        ## セグメントツリーを生成します。\n        ## vに元となるリスト、mergeに二つの区間をマージする関数、デフォルトに単位元を与えてください。\n        var lastnode = 1\n        while lastnode < len(v):\n            lastnode*=2\n        var arr = newSeq[T](2*lastnode)\n        arr.fill(default)\n        var self = SegmentTree[T](default: default, merge: merge, arr: arr, lastnode: lastnode, length: len(v))\n        #1-indexedで作成する\n        for i in 0..<len(v):\n            self.arr[self.lastnode+i] = v[i]\n        for i in countdown(lastnode-1, 1):\n            self.arr[i] = self.merge(self.arr[2*i], self.arr[2*i+1])\n        return self\n\n    proc update*[T](self: SegmentTree[T], x: Natural, val: T) =\n        ## xの要素をvalに変更します。\n        assert x < self.length\n        var x = x\n        x += self.lastnode\n        self.arr[x] = val\n        while x > 1:\n            x = x shr 1\n            self.arr[x] = self.merge(self.arr[2*x], self.arr[2*x+1])\n    proc get*[T](self: SegmentTree[T], q_left: Natural, q_right: Natural): T =\n        ## 半解区間[q_left,q_right)についての演算結果を返します。\n        assert q_left <= q_right and 0 <= q_left and q_right <= self.length\n        var q_left = q_left\n        var q_right = q_right\n        q_left += self.lastnode\n        q_right += self.lastnode\n        var (lres, rres) = (self.default, self.default)\n        while q_left < q_right:\n            if (q_left and 1) > 0:\n                lres = self.merge(lres, self.arr[q_left])\n                q_left += 1\n            if (q_right and 1) > 0:\n                q_right -= 1\n                rres = self.merge(self.arr[q_right], rres)\n            q_left = q_left shr 1\n            q_right = q_right shr 1\n        return self.merge(lres, rres)\n    proc get*[T](self: SegmentTree[T], segment: HSlice[int, int]): T =\n        assert segment.a <= segment.b + 1 and 0 <= segment.a and segment.b+1 <= self.length\n        return self.get(segment.a, segment.b+1)\n    proc `[]`*[T](self: SegmentTree[T], segment: HSlice[int, int]): T = self.get(segment)\n    proc `[]`*[T](self: SegmentTree[T], index: Natural): T =\n        assert index < self.length\n        return self.arr[index+self.lastnode]\n    proc `[]=`*[T](self: SegmentTree[T], index: Natural, val: T) =\n        assert index < self.length\n        self.update(index, val)\n    proc get_all*[T](self: SegmentTree[T]): T =\n        ## [0,len(self))区間の演算結果をO(1)で返す\n        return self.arr[1]\n    proc len*[T](self: SegmentTree[T]): int =\n        return self.length\n    proc `$`*[T](self: SegmentTree[T]): string =\n        var s = self.arr.len div 2\n        return self.arr[s..<s+self.len].join(\" \")\n    template newSegWith*(V, merge, default: untyped): untyped =\n        initSegmentTree(V, proc (l{.inject.}, r{.inject.}: typeof(default)): typeof(default) = merge, default)\n    proc max_right*[T](self: SegmentTree[T], l: int, f: proc(l: T): bool): int =\n        assert 0 <= l and l <= self.len\n        assert f(self.default)\n        var l = l\n        if l == self.len: return self.len\n        l += self.lastnode\n        var sm = self.default\n        while true:\n            while l mod 2 == 0: l = (l shr 1)\n            if not f(self.merge(sm, self.arr[l])):\n                while l < self.lastnode:\n                    l *= 2\n                    if f(self.merge(sm, self.arr[l])):\n                        sm = self.merge(sm, self.arr[l])\n                        l += 1\n                return l - self.lastnode\n            sm = self.merge(sm, self.arr[l])\n            l += 1\n            if (l and -l) == l: break\n        return self.len\n\n"
import sequtils
import strutils
import algorithm

proc scanf(formatstr: cstring){.header: "<stdio.h>", varargs.}
proc ii(): int {.inline.} = scanf("%lld\n", addr result)

var n, q = ii()
var a = newSeqWith(n, ii())
a.reverse
var seg = newSegWith(a, max(l, r), 0)
var mn = newSeq[int](n)
for i in 0..<n:
    var l = n-1-i
    var mx = seg.max_right(l+1, proc(x: int): bool = x <= a[l])
    mn[i] = n-mx
var ad = newseqwith(n, newseq[int]())
for i in 0..<n:
    ad[mn[i]].add(i)
a.reverse
var query = newSeq[(int,int,int)](q)
for i in 0..<q:
    var _, l, r = ii()
    query[i] = (l-1, r, i)
query.sort

var ans = newseq[int](q)
var seg_add = newsegwith(newseqwith(n, 0), l+r, 0)
var li = 0
for (l, r, id) in query:
    while li <= l:
        for x in ad[li]:
            seg_add[x] = seg_add[x] + 1
        li += 1
    ans[id] = seg_add[l..<r]
echo ans.join("\n")
0