oj.uz

답안 #539281

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
539281 2022-03-18T16:10:07 Z LucaDantas Bubble Sort 2 (JOI18_bubblesort2) C++17
60 / 100
 9000 ms 100688 KB 
#include <bits/stdc++.h>
#include "bubblesort2.h"
using namespace std;

constexpr int maxn = 1<<20, B = 500, inf = 0x3f3f3f3f;

struct SegmentTree {
	int tree[maxn], lazy[maxn], a[maxn];
	void flush(int node, int i, int j) {
		if(!lazy[node]) return;
		if(i != j) {
			lazy[node<<1] += lazy[node];
			lazy[node<<1|1] += lazy[node];
		}
		tree[node] += lazy[node];
		lazy[node] = 0;
	}
	void build(int node, int i, int j) {
		lazy[node] = 0;
		if(i == j) return (void)(tree[node] = a[i]);
		int m = (i+j) >> 1;
		build(node<<1, i, m);
		build(node<<1|1, m+1, j);
		tree[node] = max(tree[node<<1], tree[node<<1|1]);
	}
	void upd(int node, int i, int j, int l, int r, int v) {
		flush(node, i, j);
		if(i > r || j < l) return;
		if(i >= l && j <= r) {
			lazy[node] += v;
			flush(node, i, j);
			return;
		}
		int m = (i+j) >> 1;
		upd(node<<1, i, m, l, r, v);
		upd(node<<1|1, m+1, j, l, r, v);
		tree[node] = max(tree[node<<1], tree[node<<1|1]);
	}
	int query() { return tree[1] + lazy[1]; } // quero o maximo geral mesmo
} seg;

void compress(vector<int>& A, vector<int>& V) {
	map<int,int> mp;
	for(int x : A)
		mp[x] = 0;
	for(int x : V)
		mp[x] = 0;
 
	int coord = 0;
	for(auto& it : mp)
		it.second = ++coord;
 
	for(int& x : A)
		x = mp[x];
	for(int& x : V)
		x = mp[x];
}

struct BIT {
	int bit[maxn];
	void upd(int x, int v) {
		for(; x > 0; x -= x&-x)
			bit[x] += v;
	}
	int query(int x) {
		int ans = 0;
		for(; x < maxn; x += x&-x)
			ans += bit[x];
		return ans;
	}
	void clear() { memset(bit, 0, sizeof bit); }
} bit, bit2;
 
vector<int> pareto;

int DENTRO_NA_QUERY[maxn]; bool foi[maxn];
vector<pair<int,int>> qr[maxn];
int FORA[maxn], DENTRO[maxn];

void rebuild(const vector<int>& A) {
	pareto.clear();
	int N = (int)(A.size());
	for(int i = 0; i < N; i++) {
		if(foi[i]) continue;
		while(pareto.size() && A[i] <= A[pareto.back()])
			pareto.pop_back();
		pareto.push_back(i);
	}

	bit.clear(); bit2.clear();
	for(int i = 0; i < (int)A.size(); i++) {
		while(qr[i].size()) {
			auto [val, id] = qr[i].back();
			qr[i].pop_back();
			DENTRO_NA_QUERY[id] = bit2.query(val+1);
		}

		DENTRO[i] = bit2.query(A[i]+1);

		if(!foi[i]) seg.a[i] = bit.query(A[i]+1);
		else seg.a[i] = -inf;

		bit.upd(A[i], 1);
		if(!foi[i])
			bit2.upd(A[i], 1);
	}
	seg.build(1, 0, N-1);
}

int bs(int x, const vector<int>& A) {
	int l = 0, r = (int)(pareto.size())-1, ans = -1;
	while(l <= r) {
		int m = (l+r) >> 1;
		if(A[pareto[m]] < x)
			ans = pareto[m], l = m+1;
		else
			r = m-1;
	}
	return ans;
}

std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V){
	int Q = (int)X.size(), N = (int)A.size();
	compress(A, V);

	std::vector<int> answer(Q);
	for(int q = 0; q < Q; q += B) {
		vector<int> special;

		for(int add = 0; add < B && add+q < Q; add++) {
			qr[X[q+add]].push_back({V[q+add], q+add});
			if(foi[X[q+add]]) continue;
			foi[X[q+add]] = 1;
			special.push_back(X[q+add]);
		}

		rebuild(A);

		for(int x : special)
			FORA[x] = 0;
 
		for(int x : special)
			for(int y : special)
				if(x < y && A[x] > A[y]) ++FORA[y];

		for(int add = 0; add < B && add+q < Q; add++) {
			int pos = X[q+add], val = V[q+add];

			{
				int last = bs(A[pos], A);
				if(last > pos)
					seg.upd(1, 0, N-1, pos, last, -1);

				for(int x : special) {
					if(pos < x && A[pos] > A[x]) --FORA[x];
					if(x < pos && A[x] > A[pos]) --FORA[pos];
				}
			}

			A[pos] = val;
			DENTRO[pos] = DENTRO_NA_QUERY[q+add];

			{
				int last = bs(A[pos], A);
				if(last > pos)
					seg.upd(1, 0, N-1, pos, last, 1);

				for(int x : special) {
					if(pos < x && A[pos] > A[x]) ++FORA[x];
					if(x < pos && A[x] > A[pos]) ++FORA[pos];
				}
			}

			int especiais = 0;
			for(int x : special)
				especiais = max(especiais, DENTRO[x] + FORA[x]);

			answer[q+add] = max(seg.query(), especiais);
		}

		for(int x : special)
			foi[x] = 0;
	}
	return answer;
}

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 33268 KB Output is correct
2 Correct 25 ms 33304 KB Output is correct
3 Correct 39 ms 33364 KB Output is correct
4 Correct 38 ms 33596 KB Output is correct
5 Correct 38 ms 33512 KB Output is correct
6 Correct 31 ms 33472 KB Output is correct
7 Correct 34 ms 33468 KB Output is correct
8 Correct 35 ms 33476 KB Output is correct
9 Correct 40 ms 33364 KB Output is correct
10 Correct 33 ms 33384 KB Output is correct
11 Correct 34 ms 33460 KB Output is correct
12 Correct 34 ms 33440 KB Output is correct
13 Correct 30 ms 33408 KB Output is correct
14 Correct 30 ms 33420 KB Output is correct
15 Correct 31 ms 33364 KB Output is correct
16 Correct 29 ms 33420 KB Output is correct
17 Correct 26 ms 33436 KB Output is correct
18 Correct 27 ms 33420 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 33268 KB Output is correct
2 Correct 25 ms 33304 KB Output is correct
3 Correct 39 ms 33364 KB Output is correct
4 Correct 38 ms 33596 KB Output is correct
5 Correct 38 ms 33512 KB Output is correct
6 Correct 31 ms 33472 KB Output is correct
7 Correct 34 ms 33468 KB Output is correct
8 Correct 35 ms 33476 KB Output is correct
9 Correct 40 ms 33364 KB Output is correct
10 Correct 33 ms 33384 KB Output is correct
11 Correct 34 ms 33460 KB Output is correct
12 Correct 34 ms 33440 KB Output is correct
13 Correct 30 ms 33408 KB Output is correct
14 Correct 30 ms 33420 KB Output is correct
15 Correct 31 ms 33364 KB Output is correct
16 Correct 29 ms 33420 KB Output is correct
17 Correct 26 ms 33436 KB Output is correct
18 Correct 27 ms 33420 KB Output is correct
19 Correct 110 ms 34220 KB Output is correct
20 Correct 127 ms 34404 KB Output is correct
21 Correct 123 ms 34364 KB Output is correct
22 Correct 119 ms 34452 KB Output is correct
23 Correct 93 ms 34244 KB Output is correct
24 Correct 96 ms 34264 KB Output is correct
25 Correct 87 ms 34212 KB Output is correct
26 Correct 85 ms 34212 KB Output is correct
27 Correct 65 ms 34156 KB Output is correct
28 Correct 68 ms 34140 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 34324 KB Output is correct
2 Correct 468 ms 36148 KB Output is correct
3 Correct 1004 ms 37404 KB Output is correct
4 Correct 1020 ms 37484 KB Output is correct
5 Correct 997 ms 37416 KB Output is correct
6 Correct 999 ms 37396 KB Output is correct
7 Correct 981 ms 37452 KB Output is correct
8 Correct 954 ms 37540 KB Output is correct
9 Correct 953 ms 37324 KB Output is correct
10 Correct 611 ms 37032 KB Output is correct
11 Correct 646 ms 37116 KB Output is correct
12 Correct 661 ms 36940 KB Output is correct
13 Correct 558 ms 36772 KB Output is correct
14 Correct 546 ms 36736 KB Output is correct
15 Correct 589 ms 36720 KB Output is correct
16 Correct 546 ms 36108 KB Output is correct
17 Correct 516 ms 36124 KB Output is correct
18 Correct 583 ms 36164 KB Output is correct

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 33268 KB Output is correct
2 Correct 25 ms 33304 KB Output is correct
3 Correct 39 ms 33364 KB Output is correct
4 Correct 38 ms 33596 KB Output is correct
5 Correct 38 ms 33512 KB Output is correct
6 Correct 31 ms 33472 KB Output is correct
7 Correct 34 ms 33468 KB Output is correct
8 Correct 35 ms 33476 KB Output is correct
9 Correct 40 ms 33364 KB Output is correct
10 Correct 33 ms 33384 KB Output is correct
11 Correct 34 ms 33460 KB Output is correct
12 Correct 34 ms 33440 KB Output is correct
13 Correct 30 ms 33408 KB Output is correct
14 Correct 30 ms 33420 KB Output is correct
15 Correct 31 ms 33364 KB Output is correct
16 Correct 29 ms 33420 KB Output is correct
17 Correct 26 ms 33436 KB Output is correct
18 Correct 27 ms 33420 KB Output is correct
19 Correct 110 ms 34220 KB Output is correct
20 Correct 127 ms 34404 KB Output is correct
21 Correct 123 ms 34364 KB Output is correct
22 Correct 119 ms 34452 KB Output is correct
23 Correct 93 ms 34244 KB Output is correct
24 Correct 96 ms 34264 KB Output is correct
25 Correct 87 ms 34212 KB Output is correct
26 Correct 85 ms 34212 KB Output is correct
27 Correct 65 ms 34156 KB Output is correct
28 Correct 68 ms 34140 KB Output is correct
29 Correct 59 ms 34324 KB Output is correct
30 Correct 468 ms 36148 KB Output is correct
31 Correct 1004 ms 37404 KB Output is correct
32 Correct 1020 ms 37484 KB Output is correct
33 Correct 997 ms 37416 KB Output is correct
34 Correct 999 ms 37396 KB Output is correct
35 Correct 981 ms 37452 KB Output is correct
36 Correct 954 ms 37540 KB Output is correct
37 Correct 953 ms 37324 KB Output is correct
38 Correct 611 ms 37032 KB Output is correct
39 Correct 646 ms 37116 KB Output is correct
40 Correct 661 ms 36940 KB Output is correct
41 Correct 558 ms 36772 KB Output is correct
42 Correct 546 ms 36736 KB Output is correct
43 Correct 589 ms 36720 KB Output is correct
44 Correct 546 ms 36108 KB Output is correct
45 Correct 516 ms 36124 KB Output is correct
46 Correct 583 ms 36164 KB Output is correct
47 Correct 7942 ms 57356 KB Output is correct
48 Execution timed out 9063 ms 100688 KB Time limit exceeded
49 Halted 0 ms 0 KB -