oj.uz

Submission #1012188

# Submission time Handle Problem Language Result Execution time Memory
1012188 2024-07-01T19:24:52 Z d4xn Bubble Sort 2 (JOI18_bubblesort2) C++17
17 / 100
 9000 ms 1368 KB 
#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx2")
#include "bubblesort2.h"
#include <bits/stdc++.h>
using namespace std;

const int N = 8000, inf = INT_MAX;

int n, suf[N], seg[N*4];
pair<int, int> b[N];

void update(int x, int p=1, int l=0, int r=n-1) {
  if (l == r) {
    seg[p] = 1;
    return;
  }
  int mid = (l+r) >> 1;

  if (x <= mid) update(x, p*2, l, mid);
  else update(x, p*2+1, mid+1, r);

  seg[p] = seg[p*2] + seg[p*2+1];
}

int query(int L, int R, int p=1, int l=0, int r=n-1) {
  if (L <= l && r <= R) {
    return seg[p];
  }
  int mid = (l+r) >> 1;

	int x = 0;
  if (L <= mid) x += query(L, R, p*2, l, mid);
  if (mid+1 <= R) x += query(L, R, p*2+1, mid+1, r);

	return x;
}


int solve(vector<int> a) {
	memset(seg, 0, sizeof(seg));

	for (int i = n-1; i >= 0; i--) {
		b[i] = make_pair(a[i], i);
		suf[i] = min(a[i], (i+1 < n ? suf[i+1] : inf));
	}
	sort(b, b+n);

	int mx = 0;
	int R = n-1;
	for (int i = n-1; i >= 0; i--) {
		int idx = b[i].second;

		update(b[i].second);

		if (idx+1 <= n-1 && suf[idx] < a[idx]) continue;

		int x = (idx ? query(0, idx-1) : 0);

		while (R >= 0 && a[R] >= a[idx]) R--;

		if (idx < R) x += query(idx+1, R);

		//cerr << i << " " << x << endl;

		mx = max(mx, x);
	}
	
	return mx;
}

vector<int> countScans(vector<int> A, vector<int> X, vector<int> V){
	n = A.size();
	int q = X.size();
	vector<int> ans(q);

	for (int j = 0; j < q; j++) {
		A[X[j]] = V[j];
		ans[j] = solve(A);
	}

	return ans;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 348 KB Output is correct
2 Correct 51 ms 576 KB Output is correct
3 Correct 419 ms 600 KB Output is correct
4 Correct 378 ms 604 KB Output is correct
5 Correct 397 ms 616 KB Output is correct
6 Correct 462 ms 604 KB Output is correct
7 Correct 498 ms 640 KB Output is correct
8 Correct 486 ms 600 KB Output is correct
9 Correct 379 ms 600 KB Output is correct
10 Correct 379 ms 600 KB Output is correct
11 Correct 356 ms 600 KB Output is correct
12 Correct 360 ms 600 KB Output is correct
13 Correct 390 ms 848 KB Output is correct
14 Correct 344 ms 604 KB Output is correct
15 Correct 355 ms 604 KB Output is correct
16 Correct 339 ms 604 KB Output is correct
17 Correct 349 ms 604 KB Output is correct
18 Correct 362 ms 604 KB Output is correct

Subtask #2
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 348 KB Output is correct
2 Correct 51 ms 576 KB Output is correct
3 Correct 419 ms 600 KB Output is correct
4 Correct 378 ms 604 KB Output is correct
5 Correct 397 ms 616 KB Output is correct
6 Correct 462 ms 604 KB Output is correct
7 Correct 498 ms 640 KB Output is correct
8 Correct 486 ms 600 KB Output is correct
9 Correct 379 ms 600 KB Output is correct
10 Correct 379 ms 600 KB Output is correct
11 Correct 356 ms 600 KB Output is correct
12 Correct 360 ms 600 KB Output is correct
13 Correct 390 ms 848 KB Output is correct
14 Correct 344 ms 604 KB Output is correct
15 Correct 355 ms 604 KB Output is correct
16 Correct 339 ms 604 KB Output is correct
17 Correct 349 ms 604 KB Output is correct
18 Correct 362 ms 604 KB Output is correct
19 Correct 6167 ms 872 KB Output is correct
20 Correct 8079 ms 884 KB Output is correct
21 Execution timed out 9038 ms 856 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 1368 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 348 KB Output is correct
2 Correct 51 ms 576 KB Output is correct
3 Correct 419 ms 600 KB Output is correct
4 Correct 378 ms 604 KB Output is correct
5 Correct 397 ms 616 KB Output is correct
6 Correct 462 ms 604 KB Output is correct
7 Correct 498 ms 640 KB Output is correct
8 Correct 486 ms 600 KB Output is correct
9 Correct 379 ms 600 KB Output is correct
10 Correct 379 ms 600 KB Output is correct
11 Correct 356 ms 600 KB Output is correct
12 Correct 360 ms 600 KB Output is correct
13 Correct 390 ms 848 KB Output is correct
14 Correct 344 ms 604 KB Output is correct
15 Correct 355 ms 604 KB Output is correct
16 Correct 339 ms 604 KB Output is correct
17 Correct 349 ms 604 KB Output is correct
18 Correct 362 ms 604 KB Output is correct
19 Correct 6167 ms 872 KB Output is correct
20 Correct 8079 ms 884 KB Output is correct
21 Execution timed out 9038 ms 856 KB Time limit exceeded
22 Halted 0 ms 0 KB -