oj.uz

Submission #776908

# Submission time Handle Problem Language Result Execution time Memory
776908 2023-07-08T11:39:41 Z PanosPask Bubble Sort 2 (JOI18_bubblesort2) C++14
38 / 100
 32 ms 4532 KB 
#include "bubblesort2.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct SegTree {
	const ll NO_OP = 0;
	const ll NEUTRAL = 0;

	int size;
	vector<ll> tree;
	vector<ll> operations;

	void init(int n) {
		size = 1;
		while (size < n)
			size *= 2;

		tree.resize(2 * size, NEUTRAL);
		operations.assign(2 * size, NO_OP);
	}

	void propagate(int x) {
		tree[2 * x + 1] += operations[x];
		tree[2 * x + 2] += operations[x];
		operations[2 * x + 1] += operations[x];
		operations[2 * x + 2] += operations[x];

		operations[x] = NO_OP;
	}

	void modify(int l, int r, int v, int x, int lx, int rx) {
		if (l >= rx || lx >= r) {
			return;
		}
		else if (l <= lx && rx <= r) {
			tree[x] += v;
			operations[x] += v;
			return;
		}

		propagate(x);

		int mid = (lx + rx) / 2;
		modify(l, r, v, 2 * x + 1, lx, mid);
		modify(l, r, v, 2 * x + 2, mid, rx);

		tree[x] = max(tree[2 * x + 1], tree[2 * x +2]);
	}
	void modify(int l, int r, int v) {
		modify(l, r, v, 0, 0, size);
	}

	ll calc(int l, int r, int x, int lx, int rx) {
		if (l >= rx || lx >= r) {
			return NEUTRAL;
		}
		else if (l <= lx && rx <= r) {
			return tree[x];
		}

		propagate(x);

		int mid = (lx + rx) / 2;
		ll c1 = calc(l, r, 2 * x + 1, lx, mid);
		ll c2 = calc(l, r, 2 * x + 2, mid, rx);

		return max(c1, c2);
	}
	ll calc(int l, int r) {
		return calc(l, r, 0, 0, size);
	}
};

int N;
set<int> seen;
vector<set<int>> latest;
unordered_map<int, int> compress;
vector<int> startv;

SegTree st;

vector<int> countScans(vector<int> A, vector<int> X, vector<int> V)
{
	// Coordinate compression
	for (int i = 0; i < A.size(); i++)
		seen.insert(A[i]);
	for (int i = 0; i < V.size(); i++)
		seen.insert(V[i]);
	for (auto val : seen)
		compress[val] = N++;

	latest.resize(N);
	st.init(N);
	for (int val = 0; val < N; val++)
		latest[val].insert(-1);
	for (int i = 0; i < A.size(); i++) {
		A[i] = compress[A[i]];
		latest[A[i]].insert(i);

		st.modify(A[i] + 1, N, -1);
	}

	for (int val = 0; val < N; val++) {
		st.modify(val, val + 1, *latest[val].rbegin());
	}

	vector<int> ans;
	for (int q = 0; q < X.size(); q++) {
		int i = X[q];
		int val = compress[V[q]];
		int prev = A[i];

		// Take care of the old value first
		st.modify(prev + 1, N, +1);
		st.modify(prev, prev + 1, - *latest[prev].rbegin());
		latest[prev].erase(i);
		st.modify(prev, prev + 1, *latest[prev].rbegin());

		// Proccess the new value
		st.modify(val + 1, N, -1);
		st.modify(val, val + 1, - *latest[val].rbegin());
		latest[val].insert(i);
		st.modify(val, val + 1, *latest[val].rbegin());

		A[i] = val;
		ans.push_back(st.calc(0, N));
	}

	return ans;
}

Compilation message

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:88:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |  for (int i = 0; i < A.size(); i++)
      |                  ~~^~~~~~~~~~
bubblesort2.cpp:90:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |  for (int i = 0; i < V.size(); i++)
      |                  ~~^~~~~~~~~~
bubblesort2.cpp:99:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |  for (int i = 0; i < A.size(); i++) {
      |                  ~~^~~~~~~~~~
bubblesort2.cpp:111:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  111 |  for (int q = 0; q < X.size(); q++) {
      |                  ~~^~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 6 ms 1332 KB Output is correct
4 Correct 6 ms 1364 KB Output is correct
5 Correct 7 ms 1364 KB Output is correct
6 Correct 6 ms 1340 KB Output is correct
7 Correct 6 ms 1368 KB Output is correct
8 Correct 6 ms 1364 KB Output is correct
9 Correct 6 ms 1376 KB Output is correct
10 Correct 6 ms 1236 KB Output is correct
11 Correct 6 ms 1208 KB Output is correct
12 Correct 6 ms 1212 KB Output is correct
13 Correct 6 ms 1208 KB Output is correct
14 Correct 6 ms 1236 KB Output is correct
15 Correct 6 ms 1236 KB Output is correct
16 Correct 6 ms 1108 KB Output is correct
17 Correct 6 ms 1192 KB Output is correct
18 Correct 6 ms 1080 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 6 ms 1332 KB Output is correct
4 Correct 6 ms 1364 KB Output is correct
5 Correct 7 ms 1364 KB Output is correct
6 Correct 6 ms 1340 KB Output is correct
7 Correct 6 ms 1368 KB Output is correct
8 Correct 6 ms 1364 KB Output is correct
9 Correct 6 ms 1376 KB Output is correct
10 Correct 6 ms 1236 KB Output is correct
11 Correct 6 ms 1208 KB Output is correct
12 Correct 6 ms 1212 KB Output is correct
13 Correct 6 ms 1208 KB Output is correct
14 Correct 6 ms 1236 KB Output is correct
15 Correct 6 ms 1236 KB Output is correct
16 Correct 6 ms 1108 KB Output is correct
17 Correct 6 ms 1192 KB Output is correct
18 Correct 6 ms 1080 KB Output is correct
19 Correct 31 ms 4092 KB Output is correct
20 Correct 28 ms 4516 KB Output is correct
21 Correct 26 ms 4532 KB Output is correct
22 Correct 26 ms 4520 KB Output is correct
23 Correct 32 ms 4148 KB Output is correct
24 Correct 32 ms 4196 KB Output is correct
25 Correct 25 ms 3924 KB Output is correct
26 Correct 24 ms 3924 KB Output is correct
27 Correct 24 ms 3860 KB Output is correct
28 Correct 24 ms 3824 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 1876 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 6 ms 1332 KB Output is correct
4 Correct 6 ms 1364 KB Output is correct
5 Correct 7 ms 1364 KB Output is correct
6 Correct 6 ms 1340 KB Output is correct
7 Correct 6 ms 1368 KB Output is correct
8 Correct 6 ms 1364 KB Output is correct
9 Correct 6 ms 1376 KB Output is correct
10 Correct 6 ms 1236 KB Output is correct
11 Correct 6 ms 1208 KB Output is correct
12 Correct 6 ms 1212 KB Output is correct
13 Correct 6 ms 1208 KB Output is correct
14 Correct 6 ms 1236 KB Output is correct
15 Correct 6 ms 1236 KB Output is correct
16 Correct 6 ms 1108 KB Output is correct
17 Correct 6 ms 1192 KB Output is correct
18 Correct 6 ms 1080 KB Output is correct
19 Correct 31 ms 4092 KB Output is correct
20 Correct 28 ms 4516 KB Output is correct
21 Correct 26 ms 4532 KB Output is correct
22 Correct 26 ms 4520 KB Output is correct
23 Correct 32 ms 4148 KB Output is correct
24 Correct 32 ms 4196 KB Output is correct
25 Correct 25 ms 3924 KB Output is correct
26 Correct 24 ms 3924 KB Output is correct
27 Correct 24 ms 3860 KB Output is correct
28 Correct 24 ms 3824 KB Output is correct
29 Incorrect 12 ms 1876 KB Output isn't correct
30 Halted 0 ms 0 KB -