oj.uz

답안 #539274

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
539274 2022-03-18T16:03:03 Z LucaDantas Bubble Sort 2 (JOI18_bubblesort2) C++17
17 / 100
 416 ms 30292 KB 
#include <bits/stdc++.h>
#include "bubblesort2.h"
using namespace std;

constexpr int maxn = 1<<20, B = 2010, inf = 0x3f3f3f3f; // subtasks brutao, mudar

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], FORA_INI[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();
	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 x : special)
			DENTRO[x] -= FORA[x], FORA_INI[x] = FORA[x]; */

		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];

			DENTRO[pos] = 0;
			for(int j = 0; j < pos; j++)
				if(!foi[j] && A[j] > val) DENTRO[pos]++;

			{
				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 22 ms 29180 KB Output is correct
2 Correct 27 ms 29224 KB Output is correct
3 Correct 79 ms 29396 KB Output is correct
4 Correct 77 ms 29396 KB Output is correct
5 Correct 70 ms 29396 KB Output is correct
6 Correct 33 ms 29408 KB Output is correct
7 Correct 51 ms 29396 KB Output is correct
8 Correct 52 ms 29332 KB Output is correct
9 Correct 68 ms 29396 KB Output is correct
10 Correct 60 ms 29268 KB Output is correct
11 Correct 65 ms 29368 KB Output is correct
12 Correct 61 ms 29268 KB Output is correct
13 Correct 59 ms 29364 KB Output is correct
14 Correct 61 ms 29364 KB Output is correct
15 Correct 60 ms 29364 KB Output is correct
16 Correct 44 ms 29336 KB Output is correct
17 Correct 39 ms 29268 KB Output is correct
18 Correct 42 ms 29336 KB Output is correct

Subtask #2
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 29180 KB Output is correct
2 Correct 27 ms 29224 KB Output is correct
3 Correct 79 ms 29396 KB Output is correct
4 Correct 77 ms 29396 KB Output is correct
5 Correct 70 ms 29396 KB Output is correct
6 Correct 33 ms 29408 KB Output is correct
7 Correct 51 ms 29396 KB Output is correct
8 Correct 52 ms 29332 KB Output is correct
9 Correct 68 ms 29396 KB Output is correct
10 Correct 60 ms 29268 KB Output is correct
11 Correct 65 ms 29368 KB Output is correct
12 Correct 61 ms 29268 KB Output is correct
13 Correct 59 ms 29364 KB Output is correct
14 Correct 61 ms 29364 KB Output is correct
15 Correct 60 ms 29364 KB Output is correct
16 Correct 44 ms 29336 KB Output is correct
17 Correct 39 ms 29268 KB Output is correct
18 Correct 42 ms 29336 KB Output is correct
19 Incorrect 416 ms 30192 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 232 ms 30292 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 29180 KB Output is correct
2 Correct 27 ms 29224 KB Output is correct
3 Correct 79 ms 29396 KB Output is correct
4 Correct 77 ms 29396 KB Output is correct
5 Correct 70 ms 29396 KB Output is correct
6 Correct 33 ms 29408 KB Output is correct
7 Correct 51 ms 29396 KB Output is correct
8 Correct 52 ms 29332 KB Output is correct
9 Correct 68 ms 29396 KB Output is correct
10 Correct 60 ms 29268 KB Output is correct
11 Correct 65 ms 29368 KB Output is correct
12 Correct 61 ms 29268 KB Output is correct
13 Correct 59 ms 29364 KB Output is correct
14 Correct 61 ms 29364 KB Output is correct
15 Correct 60 ms 29364 KB Output is correct
16 Correct 44 ms 29336 KB Output is correct
17 Correct 39 ms 29268 KB Output is correct
18 Correct 42 ms 29336 KB Output is correct
19 Incorrect 416 ms 30192 KB Output isn't correct
20 Halted 0 ms 0 KB -