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Submission #569158

# Submission time Handle Problem Language Result Execution time Memory
569158 2022-05-26T20:09:22 Z sidon Railway Trip 2 (JOI22_ho_t4) C++17
100 / 100
 668 ms 41872 KB 
#include <bits/stdc++.h>
using namespace std;

const int Z = 1e5, B = 17;

int N, K, M;

struct ST {
	int a[2*Z] {}, minQry = 0;
	void update(int i, int v) {
		i += N;
		for(a[i] = max(a[i], minQry ? Z-v : v); i /= 2; )
			a[i] = max(a[2*i], a[2*i+1]);
	}
	int query(int l, int r) {
		int x {};
		for(l += N, r += N + 1; l < r; l /= 2, r /= 2) {
			if(l & 1) x = max(x, a[l++]);
			if(r & 1) x = max(x, a[--r]);
		}
		return minQry ? Z-x : x;
	}
	int operator[](int i) {
		return minQry ? Z - a[i + N] : a[i + N];
	}
} s[2][B];

int main() {
	ios::sync_with_stdio(0), cin.tie(0);
	cin >> N >> K >> M;

	priority_queue<array<int, 2>> q[2];
	vector<array<int, 2>> g[2][N];

	while(M--) {
		int l, r; cin >> l >> r;
		--l, --r;

		if(l < r)
			g[1][l].push_back({r, min(l + K - 1, r)});
		else
			g[0][max(l - K + 1, r)].push_back({-r, l});
	}

	for(int i = 0; i < B; ++i)
		s[0][i].minQry = 1;

	for(int i = 0; i < N; ++i) {
		for(int j : {0, 1}) {
			for(auto k : g[j][i]) q[j].push(k);
			while(!empty(q[j]) && q[j].top()[1] < i) q[j].pop();

			s[j][0].update(i, empty(q[j]) ? i : (j ? 1 : -1) * q[j].top()[0]);
		}
	}

	for(int k = 0; k + 1 < B; ++k) {
		for(int j : {0, 1}) for(int i = 0; i < N; ++i)
			s[j][k + 1].update(i, s[j][k].query(s[0][k][i], s[1][k][i]));
	}

	cin >> M;
	while(M--) {
		int l, t; cin >> l >> t;
		--l, --t;
		int r = l, x {};

		for(int i = B; i--; ) {
			int sl = s[0][i].query(l, r);
			int sr = s[1][i].query(l, r);
			if(sl > t || t > sr) {
				l = sl, r = sr;
				x |= 1<<i;
			}
		}
		cout << (++x > N ? -1 : x) << '\n';
	}
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 2 ms 596 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 9 ms 1208 KB Output is correct
14 Correct 8 ms 1108 KB Output is correct
15 Correct 5 ms 1108 KB Output is correct
16 Correct 7 ms 1236 KB Output is correct
17 Correct 6 ms 1196 KB Output is correct
18 Correct 5 ms 1236 KB Output is correct
19 Correct 6 ms 1108 KB Output is correct
20 Correct 5 ms 1108 KB Output is correct
21 Correct 5 ms 1108 KB Output is correct
22 Correct 8 ms 1232 KB Output is correct
23 Correct 6 ms 1236 KB Output is correct
24 Correct 6 ms 1232 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 346 ms 35368 KB Output is correct
2 Correct 379 ms 35392 KB Output is correct
3 Correct 405 ms 36232 KB Output is correct
4 Correct 356 ms 35200 KB Output is correct
5 Correct 363 ms 39188 KB Output is correct
6 Correct 388 ms 41024 KB Output is correct
7 Correct 410 ms 39184 KB Output is correct
8 Correct 322 ms 35836 KB Output is correct
9 Correct 373 ms 35956 KB Output is correct
10 Correct 401 ms 39096 KB Output is correct
11 Correct 405 ms 39228 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 428 ms 36504 KB Output is correct
2 Correct 446 ms 39636 KB Output is correct
3 Correct 546 ms 37072 KB Output is correct
4 Correct 399 ms 39796 KB Output is correct
5 Correct 394 ms 39880 KB Output is correct
6 Correct 414 ms 40036 KB Output is correct
7 Correct 429 ms 39176 KB Output is correct
8 Correct 596 ms 39804 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 611 ms 39692 KB Output is correct
2 Correct 568 ms 37584 KB Output is correct
3 Correct 528 ms 35176 KB Output is correct
4 Correct 522 ms 33420 KB Output is correct
5 Correct 388 ms 32532 KB Output is correct
6 Correct 462 ms 32376 KB Output is correct
7 Correct 422 ms 37568 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 7 ms 1236 KB Output is correct
10 Correct 442 ms 38920 KB Output is correct
11 Correct 439 ms 39472 KB Output is correct
12 Correct 447 ms 39348 KB Output is correct
13 Correct 460 ms 39484 KB Output is correct
14 Correct 2 ms 596 KB Output is correct
15 Correct 8 ms 1108 KB Output is correct
16 Correct 423 ms 37592 KB Output is correct
17 Correct 668 ms 39844 KB Output is correct
18 Correct 614 ms 39868 KB Output is correct
19 Correct 619 ms 39792 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 9 ms 1208 KB Output is correct
14 Correct 8 ms 1108 KB Output is correct
15 Correct 5 ms 1108 KB Output is correct
16 Correct 7 ms 1236 KB Output is correct
17 Correct 6 ms 1196 KB Output is correct
18 Correct 5 ms 1236 KB Output is correct
19 Correct 6 ms 1108 KB Output is correct
20 Correct 5 ms 1108 KB Output is correct
21 Correct 5 ms 1108 KB Output is correct
22 Correct 8 ms 1232 KB Output is correct
23 Correct 6 ms 1236 KB Output is correct
24 Correct 6 ms 1232 KB Output is correct
25 Correct 346 ms 35368 KB Output is correct
26 Correct 379 ms 35392 KB Output is correct
27 Correct 405 ms 36232 KB Output is correct
28 Correct 356 ms 35200 KB Output is correct
29 Correct 363 ms 39188 KB Output is correct
30 Correct 388 ms 41024 KB Output is correct
31 Correct 410 ms 39184 KB Output is correct
32 Correct 322 ms 35836 KB Output is correct
33 Correct 373 ms 35956 KB Output is correct
34 Correct 401 ms 39096 KB Output is correct
35 Correct 405 ms 39228 KB Output is correct
36 Correct 428 ms 36504 KB Output is correct
37 Correct 446 ms 39636 KB Output is correct
38 Correct 546 ms 37072 KB Output is correct
39 Correct 399 ms 39796 KB Output is correct
40 Correct 394 ms 39880 KB Output is correct
41 Correct 414 ms 40036 KB Output is correct
42 Correct 429 ms 39176 KB Output is correct
43 Correct 596 ms 39804 KB Output is correct
44 Correct 611 ms 39692 KB Output is correct
45 Correct 568 ms 37584 KB Output is correct
46 Correct 528 ms 35176 KB Output is correct
47 Correct 522 ms 33420 KB Output is correct
48 Correct 388 ms 32532 KB Output is correct
49 Correct 462 ms 32376 KB Output is correct
50 Correct 422 ms 37568 KB Output is correct
51 Correct 1 ms 596 KB Output is correct
52 Correct 7 ms 1236 KB Output is correct
53 Correct 442 ms 38920 KB Output is correct
54 Correct 439 ms 39472 KB Output is correct
55 Correct 447 ms 39348 KB Output is correct
56 Correct 460 ms 39484 KB Output is correct
57 Correct 2 ms 596 KB Output is correct
58 Correct 8 ms 1108 KB Output is correct
59 Correct 423 ms 37592 KB Output is correct
60 Correct 668 ms 39844 KB Output is correct
61 Correct 614 ms 39868 KB Output is correct
62 Correct 619 ms 39792 KB Output is correct
63 Correct 545 ms 35816 KB Output is correct
64 Correct 667 ms 36732 KB Output is correct
65 Correct 578 ms 35924 KB Output is correct
66 Correct 442 ms 39932 KB Output is correct
67 Correct 593 ms 41872 KB Output is correct
68 Correct 445 ms 39904 KB Output is correct
69 Correct 377 ms 40200 KB Output is correct
70 Correct 521 ms 38884 KB Output is correct
71 Correct 599 ms 39760 KB Output is correct