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Submission #935616

# Submission time Handle Problem Language Result Execution time Memory
935616 2024-02-29T09:50:10 Z yellowtoad Examination (JOI19_examination) C++17
100 / 100
 2119 ms 11456 KB 
#include <iostream>
#include <vector>
#include <math.h>
#include <algorithm>
#define f first
#define s second
using namespace std;

const int sz = sqrt(1e5);
int n, test, cur = 1, ans[100010], l, r, mid, pos;
pair<int,int> a[100010], b[100010], grp[100010];
vector<vector<int>> v, vv;
pair<pair<int,int>,pair<int,int>> query[100010];

signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cin >> n >> test;
	for (int i = 1; i <= n; i++) cin >> a[i].f >> a[i].s;
	sort(a+1,a+n+1);
	for (int i = 1; i <= n; i++) b[i] = {a[i].f+a[i].s,i};
	sort(b+1,b+n+1,greater<pair<int,int>>());
	for (int i = 1; i <= test; i++) {
		cin >> query[i].s.f >> query[i].s.s >> query[i].f.f;
		query[i].f.s = i;
	}
	sort(query+1,query+test+1,greater<pair<pair<int,int>,pair<int,int>>>());
	for (int i = 1; i <= n; i++) {
		if (i%sz == 1) v.push_back({}), vv.push_back({});
		v.back().push_back(-1);
		vv.back().push_back(-1);
		grp[i] = {v.size()-1,v.back().size()-1};
	}
	for (int i = 1; i <= test; i++) {
		while ((cur <= n) && (b[cur].f >= query[i].f.f)) {
			vv[grp[b[cur].s].f][grp[b[cur].s].s] = a[b[cur].s].s;
			for (int j = 0; j < v[grp[b[cur].s].f].size(); j++) v[grp[b[cur].s].f][j] = vv[grp[b[cur].s].f][j];
			sort(v[grp[b[cur].s].f].begin(),v[grp[b[cur].s].f].end());
			cur++;
		}
		l = 1; r = n;
		while (l <= r) {
			mid = (l+r)/2;
			if (a[mid].f >= query[i].s.f) r = mid-1;
			else l = mid+1;
		}
		pos = l;
		int cnt = 0;
		if (l == n+1) continue;
		for (int j = grp[pos].s; j < v[grp[pos].f].size(); j++) if (vv[grp[pos].f][j] >= query[i].s.s) cnt++;
		for (int j = grp[pos].f+1; j < v.size(); j++) {
			l = 0; r = v[j].size()-1;
			while (l <= r) {
				mid = (l+r)/2;
				if (v[j][mid] < query[i].s.s) l = mid+1;
				else r = mid-1;
			}
			cnt += v[j].size()-l;
		}
		ans[query[i].f.s] = cnt;
	}
	for (int i = 1; i <= test; i++) cout << ans[i] << "\n";
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |    for (int j = 0; j < v[grp[b[cur].s].f].size(); j++) v[grp[b[cur].s].f][j] = vv[grp[b[cur].s].f][j];
      |                    ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:50:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |   for (int j = grp[pos].s; j < v[grp[pos].f].size(); j++) if (vv[grp[pos].f][j] >= query[i].s.s) cnt++;
      |                            ~~^~~~~~~~~~~~~~~~~~~~~~
examination.cpp:51:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |   for (int j = grp[pos].f+1; j < v.size(); j++) {
      |                              ~~^~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 20 ms 4444 KB Output is correct
8 Correct 20 ms 4444 KB Output is correct
9 Correct 19 ms 4664 KB Output is correct
10 Correct 17 ms 4660 KB Output is correct
11 Correct 21 ms 4652 KB Output is correct
12 Correct 13 ms 4440 KB Output is correct
13 Correct 19 ms 4780 KB Output is correct
14 Correct 20 ms 4696 KB Output is correct
15 Correct 19 ms 4792 KB Output is correct
16 Correct 11 ms 4752 KB Output is correct
17 Correct 11 ms 4760 KB Output is correct
18 Correct 13 ms 4688 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1489 ms 6532 KB Output is correct
2 Correct 1480 ms 9036 KB Output is correct
3 Correct 1478 ms 9304 KB Output is correct
4 Correct 1026 ms 8288 KB Output is correct
5 Correct 638 ms 8292 KB Output is correct
6 Correct 584 ms 7764 KB Output is correct
7 Correct 2079 ms 8960 KB Output is correct
8 Correct 1296 ms 9040 KB Output is correct
9 Correct 1750 ms 8864 KB Output is correct
10 Correct 538 ms 8044 KB Output is correct
11 Correct 587 ms 8020 KB Output is correct
12 Correct 518 ms 7264 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1489 ms 6532 KB Output is correct
2 Correct 1480 ms 9036 KB Output is correct
3 Correct 1478 ms 9304 KB Output is correct
4 Correct 1026 ms 8288 KB Output is correct
5 Correct 638 ms 8292 KB Output is correct
6 Correct 584 ms 7764 KB Output is correct
7 Correct 2079 ms 8960 KB Output is correct
8 Correct 1296 ms 9040 KB Output is correct
9 Correct 1750 ms 8864 KB Output is correct
10 Correct 538 ms 8044 KB Output is correct
11 Correct 587 ms 8020 KB Output is correct
12 Correct 518 ms 7264 KB Output is correct
13 Correct 1348 ms 9424 KB Output is correct
14 Correct 1561 ms 9440 KB Output is correct
15 Correct 1510 ms 9288 KB Output is correct
16 Correct 999 ms 8788 KB Output is correct
17 Correct 635 ms 8700 KB Output is correct
18 Correct 614 ms 7504 KB Output is correct
19 Correct 1351 ms 9564 KB Output is correct
20 Correct 1438 ms 9712 KB Output is correct
21 Correct 1472 ms 9472 KB Output is correct
22 Correct 535 ms 8020 KB Output is correct
23 Correct 558 ms 8132 KB Output is correct
24 Correct 396 ms 7028 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 20 ms 4444 KB Output is correct
8 Correct 20 ms 4444 KB Output is correct
9 Correct 19 ms 4664 KB Output is correct
10 Correct 17 ms 4660 KB Output is correct
11 Correct 21 ms 4652 KB Output is correct
12 Correct 13 ms 4440 KB Output is correct
13 Correct 19 ms 4780 KB Output is correct
14 Correct 20 ms 4696 KB Output is correct
15 Correct 19 ms 4792 KB Output is correct
16 Correct 11 ms 4752 KB Output is correct
17 Correct 11 ms 4760 KB Output is correct
18 Correct 13 ms 4688 KB Output is correct
19 Correct 1489 ms 6532 KB Output is correct
20 Correct 1480 ms 9036 KB Output is correct
21 Correct 1478 ms 9304 KB Output is correct
22 Correct 1026 ms 8288 KB Output is correct
23 Correct 638 ms 8292 KB Output is correct
24 Correct 584 ms 7764 KB Output is correct
25 Correct 2079 ms 8960 KB Output is correct
26 Correct 1296 ms 9040 KB Output is correct
27 Correct 1750 ms 8864 KB Output is correct
28 Correct 538 ms 8044 KB Output is correct
29 Correct 587 ms 8020 KB Output is correct
30 Correct 518 ms 7264 KB Output is correct
31 Correct 1348 ms 9424 KB Output is correct
32 Correct 1561 ms 9440 KB Output is correct
33 Correct 1510 ms 9288 KB Output is correct
34 Correct 999 ms 8788 KB Output is correct
35 Correct 635 ms 8700 KB Output is correct
36 Correct 614 ms 7504 KB Output is correct
37 Correct 1351 ms 9564 KB Output is correct
38 Correct 1438 ms 9712 KB Output is correct
39 Correct 1472 ms 9472 KB Output is correct
40 Correct 535 ms 8020 KB Output is correct
41 Correct 558 ms 8132 KB Output is correct
42 Correct 396 ms 7028 KB Output is correct
43 Correct 1348 ms 11448 KB Output is correct
44 Correct 1356 ms 11456 KB Output is correct
45 Correct 1571 ms 11288 KB Output is correct
46 Correct 1026 ms 9868 KB Output is correct
47 Correct 671 ms 9872 KB Output is correct
48 Correct 609 ms 7396 KB Output is correct
49 Correct 2119 ms 11296 KB Output is correct
50 Correct 1248 ms 11352 KB Output is correct
51 Correct 1627 ms 11196 KB Output is correct
52 Correct 594 ms 9596 KB Output is correct
53 Correct 560 ms 9104 KB Output is correct