oj.uz

답안 #539262

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
539262 2022-03-18T15:50:00 Z LucaDantas Bubble Sort 2 (JOI18_bubblesort2) C++17
17 / 100
 9000 ms 30068 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;
 
vector<int> pareto;

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

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

		// if(!foi[i])
		bit.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 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);
			}

			A[pos] = val;

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

			int especiais = 0;
			for(int x : special) {
				int aq = 0;
				for(int j = 0; j < x; j++)
					aq += A[j] > A[x];
				especiais = max(especiais, aq);
			}

			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 53 ms 29140 KB Output is correct
2 Correct 162 ms 29272 KB Output is correct
3 Correct 1779 ms 29340 KB Output is correct
4 Correct 1752 ms 29344 KB Output is correct
5 Correct 1702 ms 29268 KB Output is correct
6 Correct 413 ms 29268 KB Output is correct
7 Correct 956 ms 29344 KB Output is correct
8 Correct 1242 ms 29268 KB Output is correct
9 Correct 1796 ms 29340 KB Output is correct
10 Correct 1267 ms 29320 KB Output is correct
11 Correct 1281 ms 29316 KB Output is correct
12 Correct 1261 ms 29316 KB Output is correct
13 Correct 1348 ms 29308 KB Output is correct
14 Correct 1350 ms 29308 KB Output is correct
15 Correct 1356 ms 29304 KB Output is correct
16 Correct 1314 ms 29296 KB Output is correct
17 Correct 1286 ms 29296 KB Output is correct
18 Correct 1300 ms 29300 KB Output is correct

Subtask #2
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 29140 KB Output is correct
2 Correct 162 ms 29272 KB Output is correct
3 Correct 1779 ms 29340 KB Output is correct
4 Correct 1752 ms 29344 KB Output is correct
5 Correct 1702 ms 29268 KB Output is correct
6 Correct 413 ms 29268 KB Output is correct
7 Correct 956 ms 29344 KB Output is correct
8 Correct 1242 ms 29268 KB Output is correct
9 Correct 1796 ms 29340 KB Output is correct
10 Correct 1267 ms 29320 KB Output is correct
11 Correct 1281 ms 29316 KB Output is correct
12 Correct 1261 ms 29316 KB Output is correct
13 Correct 1348 ms 29308 KB Output is correct
14 Correct 1350 ms 29308 KB Output is correct
15 Correct 1356 ms 29304 KB Output is correct
16 Correct 1314 ms 29296 KB Output is correct
17 Correct 1286 ms 29296 KB Output is correct
18 Correct 1300 ms 29300 KB Output is correct
19 Execution timed out 9094 ms 30068 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 9020 ms 30044 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 29140 KB Output is correct
2 Correct 162 ms 29272 KB Output is correct
3 Correct 1779 ms 29340 KB Output is correct
4 Correct 1752 ms 29344 KB Output is correct
5 Correct 1702 ms 29268 KB Output is correct
6 Correct 413 ms 29268 KB Output is correct
7 Correct 956 ms 29344 KB Output is correct
8 Correct 1242 ms 29268 KB Output is correct
9 Correct 1796 ms 29340 KB Output is correct
10 Correct 1267 ms 29320 KB Output is correct
11 Correct 1281 ms 29316 KB Output is correct
12 Correct 1261 ms 29316 KB Output is correct
13 Correct 1348 ms 29308 KB Output is correct
14 Correct 1350 ms 29308 KB Output is correct
15 Correct 1356 ms 29304 KB Output is correct
16 Correct 1314 ms 29296 KB Output is correct
17 Correct 1286 ms 29296 KB Output is correct
18 Correct 1300 ms 29300 KB Output is correct
19 Execution timed out 9094 ms 30068 KB Time limit exceeded
20 Halted 0 ms 0 KB -