oj.uz

답안 #539298

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
539298 2022-03-18T16:21:07 Z LucaDantas Bubble Sort 2 (JOI18_bubblesort2) C++17
60 / 100
 9000 ms 112748 KB 
#include <bits/stdc++.h>
#include "bubblesort2.h"
using namespace std;

constexpr int maxn = 1<<20, B = 2000, 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;
 
		sort(special.begin(), special.end());
		bit.clear();
		for(int x : special) {
			FORA[x] = bit.query(A[x]+1);
			bit.upd(A[x], 1);
		}
	
		/* 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 33236 KB Output is correct
2 Correct 27 ms 33284 KB Output is correct
3 Correct 44 ms 33512 KB Output is correct
4 Correct 46 ms 33512 KB Output is correct
5 Correct 38 ms 33404 KB Output is correct
6 Correct 33 ms 33484 KB Output is correct
7 Correct 43 ms 33452 KB Output is correct
8 Correct 44 ms 33400 KB Output is correct
9 Correct 39 ms 33460 KB Output is correct
10 Correct 38 ms 33488 KB Output is correct
11 Correct 43 ms 33488 KB Output is correct
12 Correct 35 ms 33468 KB Output is correct
13 Correct 34 ms 33408 KB Output is correct
14 Correct 39 ms 33472 KB Output is correct
15 Correct 34 ms 33388 KB Output is correct
16 Correct 29 ms 33368 KB Output is correct
17 Correct 29 ms 33368 KB Output is correct
18 Correct 26 ms 33412 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 33236 KB Output is correct
2 Correct 27 ms 33284 KB Output is correct
3 Correct 44 ms 33512 KB Output is correct
4 Correct 46 ms 33512 KB Output is correct
5 Correct 38 ms 33404 KB Output is correct
6 Correct 33 ms 33484 KB Output is correct
7 Correct 43 ms 33452 KB Output is correct
8 Correct 44 ms 33400 KB Output is correct
9 Correct 39 ms 33460 KB Output is correct
10 Correct 38 ms 33488 KB Output is correct
11 Correct 43 ms 33488 KB Output is correct
12 Correct 35 ms 33468 KB Output is correct
13 Correct 34 ms 33408 KB Output is correct
14 Correct 39 ms 33472 KB Output is correct
15 Correct 34 ms 33388 KB Output is correct
16 Correct 29 ms 33368 KB Output is correct
17 Correct 29 ms 33368 KB Output is correct
18 Correct 26 ms 33412 KB Output is correct
19 Correct 156 ms 34404 KB Output is correct
20 Correct 202 ms 34564 KB Output is correct
21 Correct 130 ms 34564 KB Output is correct
22 Correct 160 ms 34548 KB Output is correct
23 Correct 139 ms 34416 KB Output is correct
24 Correct 130 ms 34560 KB Output is correct
25 Correct 103 ms 34376 KB Output is correct
26 Correct 99 ms 34368 KB Output is correct
27 Correct 80 ms 34312 KB Output is correct
28 Correct 82 ms 34300 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 77 ms 34364 KB Output is correct
2 Correct 783 ms 36480 KB Output is correct
3 Correct 1745 ms 37968 KB Output is correct
4 Correct 1589 ms 37948 KB Output is correct
5 Correct 1457 ms 37920 KB Output is correct
6 Correct 1521 ms 37900 KB Output is correct
7 Correct 1356 ms 37988 KB Output is correct
8 Correct 1441 ms 37992 KB Output is correct
9 Correct 1408 ms 37988 KB Output is correct
10 Correct 567 ms 37692 KB Output is correct
11 Correct 590 ms 37684 KB Output is correct
12 Correct 549 ms 37644 KB Output is correct
13 Correct 377 ms 37544 KB Output is correct
14 Correct 372 ms 37416 KB Output is correct
15 Correct 378 ms 37420 KB Output is correct
16 Correct 191 ms 36848 KB Output is correct
17 Correct 194 ms 36820 KB Output is correct
18 Correct 186 ms 36820 KB Output is correct

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 33236 KB Output is correct
2 Correct 27 ms 33284 KB Output is correct
3 Correct 44 ms 33512 KB Output is correct
4 Correct 46 ms 33512 KB Output is correct
5 Correct 38 ms 33404 KB Output is correct
6 Correct 33 ms 33484 KB Output is correct
7 Correct 43 ms 33452 KB Output is correct
8 Correct 44 ms 33400 KB Output is correct
9 Correct 39 ms 33460 KB Output is correct
10 Correct 38 ms 33488 KB Output is correct
11 Correct 43 ms 33488 KB Output is correct
12 Correct 35 ms 33468 KB Output is correct
13 Correct 34 ms 33408 KB Output is correct
14 Correct 39 ms 33472 KB Output is correct
15 Correct 34 ms 33388 KB Output is correct
16 Correct 29 ms 33368 KB Output is correct
17 Correct 29 ms 33368 KB Output is correct
18 Correct 26 ms 33412 KB Output is correct
19 Correct 156 ms 34404 KB Output is correct
20 Correct 202 ms 34564 KB Output is correct
21 Correct 130 ms 34564 KB Output is correct
22 Correct 160 ms 34548 KB Output is correct
23 Correct 139 ms 34416 KB Output is correct
24 Correct 130 ms 34560 KB Output is correct
25 Correct 103 ms 34376 KB Output is correct
26 Correct 99 ms 34368 KB Output is correct
27 Correct 80 ms 34312 KB Output is correct
28 Correct 82 ms 34300 KB Output is correct
29 Correct 77 ms 34364 KB Output is correct
30 Correct 783 ms 36480 KB Output is correct
31 Correct 1745 ms 37968 KB Output is correct
32 Correct 1589 ms 37948 KB Output is correct
33 Correct 1457 ms 37920 KB Output is correct
34 Correct 1521 ms 37900 KB Output is correct
35 Correct 1356 ms 37988 KB Output is correct
36 Correct 1441 ms 37992 KB Output is correct
37 Correct 1408 ms 37988 KB Output is correct
38 Correct 567 ms 37692 KB Output is correct
39 Correct 590 ms 37684 KB Output is correct
40 Correct 549 ms 37644 KB Output is correct
41 Correct 377 ms 37544 KB Output is correct
42 Correct 372 ms 37416 KB Output is correct
43 Correct 378 ms 37420 KB Output is correct
44 Correct 191 ms 36848 KB Output is correct
45 Correct 194 ms 36820 KB Output is correct
46 Correct 186 ms 36820 KB Output is correct
47 Correct 5882 ms 60844 KB Output is correct
48 Execution timed out 9040 ms 112748 KB Time limit exceeded
49 Halted 0 ms 0 KB -