oj.uz

답안 #854853

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
854853 2023-09-29T06:38:13 Z anha3k25cvp Bubble Sort 2 (JOI18_bubblesort2) C++14
100 / 100
 2757 ms 87580 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define dl double
#define st first
#define nd second
#define II pair <int, int>
#include "bubblesort2.h"

using namespace std;

mt19937 rnd(chrono :: steady_clock :: now().time_since_epoch().count());

struct Treap {
    Treap *left = nullptr, *right = nullptr;
    int x, y, p, val, ma, siz = 1, lazy = 0;
    Treap (int _x = 0, int _p = 0, int _val = 0) : x(_x), y(rnd()), p(_p), val(_val), ma(_val) {};
    void push() {
        if (left != nullptr)
            left -> lazy += lazy;
        if (right != nullptr)
            right -> lazy += lazy;
        val += lazy;
        ma += lazy;
        lazy = 0;
    }
    void update() {
        push();
        if (left != nullptr)
            left -> push();
        if (right != nullptr)
            right -> push();
        ma = max({val, (left != nullptr ? left -> ma : val), (right != nullptr ? right -> ma : val)});
        siz = (left != nullptr ? left -> siz : 0) + (right != nullptr ? right -> siz : 0) + 1;
    }
};

int siz(Treap *t) {
    return t == nullptr ? 0 : t -> siz;
}

Treap* Merge(Treap *t1, Treap *t2) {
    if (t1 == nullptr)
        return t2;
    if (t2 == nullptr)
        return t1;
    t1 -> push();
    t2 -> push();
    if (t1 -> y > t2 -> y) {
        t1 -> right = Merge(t1 -> right, t2);
        t1 -> update();
        return t1;
    }
    t2 -> left = Merge(t1, t2 -> left);
    t2 -> update();
    return t2;
}

pair <Treap*, Treap*> split(Treap *t, int x, int p) {
    if (t == nullptr)
        return {nullptr, nullptr};
    t -> push();
    if (t -> x > x || (t -> x == x && t -> p >= p)) {
        auto a = split(t -> left, x, p);
        t -> left = a.nd;
        t -> update();
        return {a.st, t};
    }
    auto a = split(t -> right, x, p);
    t -> right = a.st;
    t -> update();
    return {t, a.nd};
}

void add(Treap *t, int val) {
    if (t != nullptr)
        t -> lazy += val;
}

Treap *root;

vector <int> countScans(vector <int> a, vector <int> x, vector <int> v){
	int n = a.size(), q = x.size();
    vector <II> b(n);
    for (int i = 0; i < n; i ++)
        b[i] = {a[i], i};
    sort(b.begin(), b.end());
    for (int i = 0; i < n; i ++)
        root = Merge(root, new Treap(b[i].st, b[i].nd, b[i].nd - i));
	vector <int> ans(q);
	for (int t = 0; t < q; t ++) {
        int pos = x[t], val = v[t];
        if (val < a[pos]) {
            auto za = split(root, val, pos), zb = split(za.nd, a[pos], pos), zc = split(zb.nd, a[pos], pos + 1);
            add(zb.st, -1);
            root = Merge(Merge(za.st, new Treap(val, pos, pos - siz(za.st))), Merge(zb.st, zc.nd));
        }
        else {
            auto za = split(root, a[pos], pos), zc = split(za.nd, a[pos], pos + 1), zb = split(zc.nd, val, pos);
            add(zb.st, 1);
            root = Merge(Merge(za.st, zb.st), Merge(new Treap(val, pos, pos - siz(za.st) - siz(zb.st)), zb.nd));
        }
        a[pos] = val;
        root -> push();
        ans[t] = root -> ma;
	}
	return ans;
}

Compilation message

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:88:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   88 |     for (int i = 0; i < n; i ++)
      |     ^~~
bubblesort2.cpp:90:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   90 |  vector <int> ans(q);
      |  ^~~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 752 KB Output is correct
5 Correct 4 ms 604 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 600 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 856 KB Output is correct
11 Correct 4 ms 600 KB Output is correct
12 Correct 4 ms 604 KB Output is correct
13 Correct 4 ms 600 KB Output is correct
14 Correct 4 ms 600 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 4 ms 604 KB Output is correct
17 Correct 5 ms 604 KB Output is correct
18 Correct 4 ms 604 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 752 KB Output is correct
5 Correct 4 ms 604 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 600 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 856 KB Output is correct
11 Correct 4 ms 600 KB Output is correct
12 Correct 4 ms 604 KB Output is correct
13 Correct 4 ms 600 KB Output is correct
14 Correct 4 ms 600 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 4 ms 604 KB Output is correct
17 Correct 5 ms 604 KB Output is correct
18 Correct 4 ms 604 KB Output is correct
19 Correct 17 ms 1592 KB Output is correct
20 Correct 17 ms 1884 KB Output is correct
21 Correct 17 ms 1880 KB Output is correct
22 Correct 16 ms 1788 KB Output is correct
23 Correct 16 ms 1884 KB Output is correct
24 Correct 17 ms 1672 KB Output is correct
25 Correct 16 ms 1884 KB Output is correct
26 Correct 16 ms 1884 KB Output is correct
27 Correct 16 ms 2128 KB Output is correct
28 Correct 18 ms 1888 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 2908 KB Output is correct
2 Correct 66 ms 5684 KB Output is correct
3 Correct 125 ms 8820 KB Output is correct
4 Correct 127 ms 8724 KB Output is correct
5 Correct 130 ms 8788 KB Output is correct
6 Correct 124 ms 8868 KB Output is correct
7 Correct 125 ms 8788 KB Output is correct
8 Correct 120 ms 8784 KB Output is correct
9 Correct 130 ms 8888 KB Output is correct
10 Correct 94 ms 8788 KB Output is correct
11 Correct 97 ms 8896 KB Output is correct
12 Correct 86 ms 8788 KB Output is correct
13 Correct 100 ms 8788 KB Output is correct
14 Correct 96 ms 8740 KB Output is correct
15 Correct 93 ms 8784 KB Output is correct
16 Correct 100 ms 8824 KB Output is correct
17 Correct 96 ms 8944 KB Output is correct
18 Correct 81 ms 8748 KB Output is correct

Subtask #4
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 752 KB Output is correct
5 Correct 4 ms 604 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 600 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 856 KB Output is correct
11 Correct 4 ms 600 KB Output is correct
12 Correct 4 ms 604 KB Output is correct
13 Correct 4 ms 600 KB Output is correct
14 Correct 4 ms 600 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 4 ms 604 KB Output is correct
17 Correct 5 ms 604 KB Output is correct
18 Correct 4 ms 604 KB Output is correct
19 Correct 17 ms 1592 KB Output is correct
20 Correct 17 ms 1884 KB Output is correct
21 Correct 17 ms 1880 KB Output is correct
22 Correct 16 ms 1788 KB Output is correct
23 Correct 16 ms 1884 KB Output is correct
24 Correct 17 ms 1672 KB Output is correct
25 Correct 16 ms 1884 KB Output is correct
26 Correct 16 ms 1884 KB Output is correct
27 Correct 16 ms 2128 KB Output is correct
28 Correct 18 ms 1888 KB Output is correct
29 Correct 15 ms 2908 KB Output is correct
30 Correct 66 ms 5684 KB Output is correct
31 Correct 125 ms 8820 KB Output is correct
32 Correct 127 ms 8724 KB Output is correct
33 Correct 130 ms 8788 KB Output is correct
34 Correct 124 ms 8868 KB Output is correct
35 Correct 125 ms 8788 KB Output is correct
36 Correct 120 ms 8784 KB Output is correct
37 Correct 130 ms 8888 KB Output is correct
38 Correct 94 ms 8788 KB Output is correct
39 Correct 97 ms 8896 KB Output is correct
40 Correct 86 ms 8788 KB Output is correct
41 Correct 100 ms 8788 KB Output is correct
42 Correct 96 ms 8740 KB Output is correct
43 Correct 93 ms 8784 KB Output is correct
44 Correct 100 ms 8824 KB Output is correct
45 Correct 96 ms 8944 KB Output is correct
46 Correct 81 ms 8748 KB Output is correct
47 Correct 554 ms 26288 KB Output is correct
48 Correct 2509 ms 79608 KB Output is correct
49 Correct 2550 ms 87168 KB Output is correct
50 Correct 2757 ms 87452 KB Output is correct
51 Correct 2677 ms 87092 KB Output is correct
52 Correct 2719 ms 87276 KB Output is correct
53 Correct 2640 ms 87208 KB Output is correct
54 Correct 2539 ms 87580 KB Output is correct
55 Correct 2593 ms 87348 KB Output is correct
56 Correct 2537 ms 87328 KB Output is correct
57 Correct 2665 ms 87296 KB Output is correct
58 Correct 2593 ms 87088 KB Output is correct
59 Correct 2240 ms 86648 KB Output is correct
60 Correct 2279 ms 86708 KB Output is correct
61 Correct 2302 ms 86612 KB Output is correct
62 Correct 2134 ms 86612 KB Output is correct
63 Correct 2111 ms 86616 KB Output is correct
64 Correct 2112 ms 86728 KB Output is correct
65 Correct 1914 ms 86696 KB Output is correct
66 Correct 1956 ms 86460 KB Output is correct
67 Correct 1884 ms 86660 KB Output is correct