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Submission #795322

# Submission time Handle Problem Language Result Execution time Memory
795322 2023-07-27T08:21:08 Z acatmeowmeow Examination (JOI19_examination) C++11
100 / 100
 986 ms 55084 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 1e5;
int n, q, A[N + 5], B[N + 5], X[N + 5], Y[N + 5], Z[N + 5], arrIndex[N + 5], queryIndex[N + 5], ans[N + 5];
vector<int> node[2*N + 5], tree[2*N + 5];

void fakeUpdate(int x, int y) {
	for (; x <= 2*N; x += x&-x) node[x].push_back(y);
}

void fakeQuery(int x, int y){
	for (; x; x -= x&-x) node[x].push_back(y);
}

void compress() {
	for (int i = 1; i <= 2*N; i++) {
		sort(node[i].begin(), node[i].end());
		node[i].erase(unique(node[i].begin(), node[i].end()), node[i].end());
		tree[i].resize(node[i].size() + 1);
	}
}

void update(int x, int y, int v) {
	for (; x <= 2*N; x += x&-x) {
		for (int yy = lower_bound(node[x].begin(), node[x].end(), y) - node[x].begin() + 1; yy <= node[x].size(); yy += yy&-yy) {
			tree[x][yy] += v;
		}
	}
}

int query(int x, int y) {
	int res = 0;
	for (; x; x -= x&-x) {
		for (int yy = lower_bound(node[x].begin(), node[x].end(), y) - node[x].begin() + 1; yy; yy -= yy&-yy) {
			res += tree[x][yy];
		}
	}
	return res;
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cin >> n >> q;
	for (int i = 1; i <= n; i++) cin >> A[i] >> B[i];
	for (int i = 1; i <= q; i++) cin >> X[i] >> Y[i] >> Z[i];
	vector<int> mp1, mp2;
	for (int i = 1; i <= n; i++) mp1.push_back(A[i]), mp2.push_back(B[i]);
	for (int i = 1; i <= q; i++) mp1.push_back(X[i]), mp2.push_back(Y[i]);
	sort(mp1.begin(), mp1.end());
	sort(mp2.begin(), mp2.end());
	auto getIndex = [&](int a, vector<int>&p) { return lower_bound(p.begin(), p.end(), a) - p.begin() + 1; };
	
	iota(arrIndex + 1, arrIndex + n + 1, 1ll);
	sort(arrIndex + 1, arrIndex + n + 1, [&](int a, int b) {
			tuple<int, int, int> f = {A[a] + B[a], A[a], B[a]}, se = {A[b] + B[b], A[b], B[b]};
			return f > se;
	});

	iota(queryIndex + 1, queryIndex + q + 1, 1ll);
	sort(queryIndex + 1, queryIndex + q + 1, [&](int a, int b) {
			tuple<int, int, int> f = {Z[a], X[a], Y[a]}, se = {Z[b], X[b], Y[b]};
			return f > se;
	});

	for (int i = 1; i <= q; i++) {
		int mpX = getIndex(X[i], mp1), mpY = getIndex(Y[i], mp2);
		fakeQuery(2*N, 2*N);
		fakeQuery(2*N, mpY - 1);
		fakeQuery(mpX - 1, 2*N);
		fakeQuery(mpX - 1, mpY - 1);
	}

	for (int i = 1; i <= n; i++) {
		int mpA = getIndex(A[i], mp1), mpB = getIndex(B[i], mp2);
		fakeUpdate(mpA, mpB);
	}
	compress();
	
	for (int i = 1, index = 1; i <= q; i++) {
		int pos = queryIndex[i];
		while (index <= n && A[arrIndex[index]] + B[arrIndex[index]] >= Z[pos]) {
			int mpA = getIndex(A[arrIndex[index]], mp1), mpB = getIndex(B[arrIndex[index]], mp2);
			update(mpA, mpB, 1);
			index++;
		}
		int mpX = getIndex(X[pos], mp1), mpY = getIndex(Y[pos], mp2);
		ans[pos] = query(2*N, 2*N) - query(2*N, mpY - 1) - query(mpX - 1, 2*N) + query(mpX - 1, mpY - 1);
	}
	
	for (int i = 1; i <= q; i++) cout << ans[i] << '\n';
	return 0;
}

Compilation message

examination.cpp: In function 'void update(int, int, int)':
examination.cpp:27:90: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   for (int yy = lower_bound(node[x].begin(), node[x].end(), y) - node[x].begin() + 1; yy <= node[x].size(); yy += yy&-yy) {
      |                                                                                       ~~~^~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 15956 KB Output is correct
2 Correct 14 ms 15992 KB Output is correct
3 Correct 13 ms 16008 KB Output is correct
4 Correct 14 ms 15992 KB Output is correct
5 Correct 14 ms 15972 KB Output is correct
6 Correct 13 ms 15956 KB Output is correct
7 Correct 30 ms 17100 KB Output is correct
8 Correct 30 ms 17096 KB Output is correct
9 Correct 30 ms 17192 KB Output is correct
10 Correct 24 ms 16904 KB Output is correct
11 Correct 28 ms 17108 KB Output is correct
12 Correct 22 ms 16724 KB Output is correct
13 Correct 29 ms 17108 KB Output is correct
14 Correct 30 ms 17092 KB Output is correct
15 Correct 30 ms 17156 KB Output is correct
16 Correct 31 ms 17108 KB Output is correct
17 Correct 22 ms 16908 KB Output is correct
18 Correct 20 ms 16724 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 737 ms 51312 KB Output is correct
2 Correct 738 ms 51312 KB Output is correct
3 Correct 753 ms 51356 KB Output is correct
4 Correct 444 ms 44688 KB Output is correct
5 Correct 504 ms 50376 KB Output is correct
6 Correct 221 ms 41284 KB Output is correct
7 Correct 654 ms 49536 KB Output is correct
8 Correct 703 ms 49844 KB Output is correct
9 Correct 618 ms 47900 KB Output is correct
10 Correct 489 ms 46708 KB Output is correct
11 Correct 300 ms 43564 KB Output is correct
12 Correct 207 ms 41120 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 737 ms 51312 KB Output is correct
2 Correct 738 ms 51312 KB Output is correct
3 Correct 753 ms 51356 KB Output is correct
4 Correct 444 ms 44688 KB Output is correct
5 Correct 504 ms 50376 KB Output is correct
6 Correct 221 ms 41284 KB Output is correct
7 Correct 654 ms 49536 KB Output is correct
8 Correct 703 ms 49844 KB Output is correct
9 Correct 618 ms 47900 KB Output is correct
10 Correct 489 ms 46708 KB Output is correct
11 Correct 300 ms 43564 KB Output is correct
12 Correct 207 ms 41120 KB Output is correct
13 Correct 986 ms 51752 KB Output is correct
14 Correct 910 ms 51664 KB Output is correct
15 Correct 823 ms 51384 KB Output is correct
16 Correct 481 ms 44996 KB Output is correct
17 Correct 739 ms 50872 KB Output is correct
18 Correct 247 ms 41492 KB Output is correct
19 Correct 910 ms 51748 KB Output is correct
20 Correct 945 ms 51868 KB Output is correct
21 Correct 846 ms 50172 KB Output is correct
22 Correct 490 ms 45944 KB Output is correct
23 Correct 311 ms 43540 KB Output is correct
24 Correct 172 ms 39780 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 15956 KB Output is correct
2 Correct 14 ms 15992 KB Output is correct
3 Correct 13 ms 16008 KB Output is correct
4 Correct 14 ms 15992 KB Output is correct
5 Correct 14 ms 15972 KB Output is correct
6 Correct 13 ms 15956 KB Output is correct
7 Correct 30 ms 17100 KB Output is correct
8 Correct 30 ms 17096 KB Output is correct
9 Correct 30 ms 17192 KB Output is correct
10 Correct 24 ms 16904 KB Output is correct
11 Correct 28 ms 17108 KB Output is correct
12 Correct 22 ms 16724 KB Output is correct
13 Correct 29 ms 17108 KB Output is correct
14 Correct 30 ms 17092 KB Output is correct
15 Correct 30 ms 17156 KB Output is correct
16 Correct 31 ms 17108 KB Output is correct
17 Correct 22 ms 16908 KB Output is correct
18 Correct 20 ms 16724 KB Output is correct
19 Correct 737 ms 51312 KB Output is correct
20 Correct 738 ms 51312 KB Output is correct
21 Correct 753 ms 51356 KB Output is correct
22 Correct 444 ms 44688 KB Output is correct
23 Correct 504 ms 50376 KB Output is correct
24 Correct 221 ms 41284 KB Output is correct
25 Correct 654 ms 49536 KB Output is correct
26 Correct 703 ms 49844 KB Output is correct
27 Correct 618 ms 47900 KB Output is correct
28 Correct 489 ms 46708 KB Output is correct
29 Correct 300 ms 43564 KB Output is correct
30 Correct 207 ms 41120 KB Output is correct
31 Correct 986 ms 51752 KB Output is correct
32 Correct 910 ms 51664 KB Output is correct
33 Correct 823 ms 51384 KB Output is correct
34 Correct 481 ms 44996 KB Output is correct
35 Correct 739 ms 50872 KB Output is correct
36 Correct 247 ms 41492 KB Output is correct
37 Correct 910 ms 51748 KB Output is correct
38 Correct 945 ms 51868 KB Output is correct
39 Correct 846 ms 50172 KB Output is correct
40 Correct 490 ms 45944 KB Output is correct
41 Correct 311 ms 43540 KB Output is correct
42 Correct 172 ms 39780 KB Output is correct
43 Correct 943 ms 55076 KB Output is correct
44 Correct 920 ms 55008 KB Output is correct
45 Correct 978 ms 55012 KB Output is correct
46 Correct 437 ms 46716 KB Output is correct
47 Correct 747 ms 52624 KB Output is correct
48 Correct 230 ms 41136 KB Output is correct
49 Correct 819 ms 53272 KB Output is correct
50 Correct 926 ms 55084 KB Output is correct
51 Correct 811 ms 53256 KB Output is correct
52 Correct 626 ms 50984 KB Output is correct
53 Correct 330 ms 44752 KB Output is correct