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Submission #862356

# Submission time Handle Problem Language Result Execution time Memory
862356 2023-10-18T05:55:26 Z TAhmed33 Osumnjičeni (COCI21_osumnjiceni) C++
110 / 110
 394 ms 32276 KB 
#include <bits/stdc++.h>
using namespace std;
#define mid ((l + r) >> 1)
#define tl (node + 1)
#define tr (node + 2 * (mid - l + 1))
bool intersect (pair <int, int> a, pair <int, int> b) {
	return !(a.second < b.first || b.second < a.first);
}
const int MAXN = 2e5 + 25;
struct SegmentTree {
	int tree[4 * MAXN], lazy[4 * MAXN];
	void init () {
		for (int i = 1; i < 4 * MAXN; i++) lazy[i] = -1;
	}
	void prop (int l, int r, int node) {
		if (lazy[node] == -1) return;
		if (l != r) {
			lazy[tl] = lazy[tr] = lazy[node];
		}
		tree[node] = lazy[node];
		lazy[node] = -1;
	}
	void update (int l, int r, int a, int b, int c, int node) {
		prop(l, r, node);
		if (l > b || r < a) return;
		if (l >= a && r <= b) {
			lazy[node] = c;
			prop(l, r, node);
			return;
		}
		update(l, mid, a, b, c, tl);
		update(mid + 1, r, a, b, c, tr);
		tree[node] = min(tree[tl], tree[tr]);
	}
	int get (int l, int r, int a, int b, int node) {
		prop(l, r, node);
		if (l > b || r < a) return 1e9;
		if (l >= a && r <= b) return tree[node];
		return min(get(l, mid, a, b, tl), get(mid + 1, r, a, b, tr));
	}
} cur;
pair <int, int> arr[MAXN];
int nxt[MAXN]; 
vector <int> l; 
int sparse[18][MAXN];
int main () {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n; cur.init();
	for (int i = 1; i <= n; i++) cin >> arr[i].first >> arr[i].second;
	for (int i = 1; i <= n; i++) {
		l.push_back(arr[i].first); l.push_back(arr[i].second);
	}
	l.push_back(1); l.push_back((int)1e9);
	sort(l.begin(), l.end()); l.resize(unique(l.begin(), l.end()) - l.begin());
	for (int i = 1; i <= n; i++) {
		arr[i].first = 1 + (lower_bound(l.begin(), l.end(), arr[i].first) - l.begin());
		arr[i].second = 1 + (lower_bound(l.begin(), l.end(), arr[i].second) - l.begin());
	}
	cur.init(); cur.update(1, 400025, 1, 400025, n + 1, 1);
	for (int i = n; i >= 1; i--) {
		nxt[i] = cur.get(1, 400025, arr[i].first, arr[i].second, 1);
		if (i < n) nxt[i] = min(nxt[i], nxt[i + 1]);
		cur.update(1, 400025, arr[i].first, arr[i].second, i, 1);
	}
	nxt[n + 1] = n + 1;
	for (int i = 1; i <= n + 1; i++) {
		sparse[0][i] = nxt[i];
	}
	for (int i = 1; i < 18; i++) {
		for (int j = 1; j <= n + 1; j++) {
			sparse[i][j] = sparse[i - 1][sparse[i - 1][j]];
		}
	}
	int q;
	cin >> q;
	while (q--) {
		int l, r;
		cin >> l >> r;
		int cnt = 0;
		for (int i = 17; i >= 0; i--) {
			if (sparse[i][l] <= r) {
				cnt += (1 << i);
				l = sparse[i][l];
			}
		}
		cout << cnt + 1 << '\n';
	}
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 267 ms 28284 KB Output is correct
2 Correct 269 ms 27588 KB Output is correct
3 Correct 263 ms 28356 KB Output is correct
4 Correct 278 ms 28304 KB Output is correct
5 Correct 288 ms 28504 KB Output is correct
6 Correct 79 ms 28104 KB Output is correct
7 Correct 87 ms 28128 KB Output is correct
8 Correct 84 ms 28100 KB Output is correct
9 Correct 90 ms 28492 KB Output is correct
10 Correct 89 ms 28100 KB Output is correct
11 Correct 177 ms 27820 KB Output is correct
12 Correct 167 ms 27540 KB Output is correct
13 Correct 175 ms 27528 KB Output is correct
14 Correct 177 ms 27836 KB Output is correct
15 Correct 178 ms 27776 KB Output is correct
16 Correct 3 ms 23128 KB Output is correct
17 Correct 84 ms 28444 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 23128 KB Output is correct
2 Correct 9 ms 23132 KB Output is correct
3 Correct 9 ms 23132 KB Output is correct
4 Correct 10 ms 23132 KB Output is correct
5 Correct 10 ms 23128 KB Output is correct
6 Correct 7 ms 23132 KB Output is correct
7 Correct 6 ms 23204 KB Output is correct
8 Correct 7 ms 23132 KB Output is correct
9 Correct 8 ms 23300 KB Output is correct
10 Correct 7 ms 23128 KB Output is correct
11 Correct 8 ms 23188 KB Output is correct
12 Correct 7 ms 23132 KB Output is correct
13 Correct 7 ms 23176 KB Output is correct
14 Correct 8 ms 23132 KB Output is correct
15 Correct 8 ms 23224 KB Output is correct
16 Correct 3 ms 22872 KB Output is correct
17 Correct 6 ms 23132 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 23128 KB Output is correct
2 Correct 9 ms 23132 KB Output is correct
3 Correct 9 ms 23132 KB Output is correct
4 Correct 10 ms 23132 KB Output is correct
5 Correct 10 ms 23128 KB Output is correct
6 Correct 7 ms 23132 KB Output is correct
7 Correct 6 ms 23204 KB Output is correct
8 Correct 7 ms 23132 KB Output is correct
9 Correct 8 ms 23300 KB Output is correct
10 Correct 7 ms 23128 KB Output is correct
11 Correct 8 ms 23188 KB Output is correct
12 Correct 7 ms 23132 KB Output is correct
13 Correct 7 ms 23176 KB Output is correct
14 Correct 8 ms 23132 KB Output is correct
15 Correct 8 ms 23224 KB Output is correct
16 Correct 3 ms 22872 KB Output is correct
17 Correct 6 ms 23132 KB Output is correct
18 Correct 64 ms 25924 KB Output is correct
19 Correct 61 ms 25680 KB Output is correct
20 Correct 62 ms 25748 KB Output is correct
21 Correct 57 ms 25616 KB Output is correct
22 Correct 59 ms 25824 KB Output is correct
23 Correct 59 ms 25684 KB Output is correct
24 Correct 58 ms 26000 KB Output is correct
25 Correct 57 ms 25680 KB Output is correct
26 Correct 55 ms 25608 KB Output is correct
27 Correct 54 ms 25428 KB Output is correct
28 Correct 45 ms 25152 KB Output is correct
29 Correct 43 ms 25168 KB Output is correct
30 Correct 43 ms 25172 KB Output is correct
31 Correct 44 ms 25300 KB Output is correct
32 Correct 42 ms 25168 KB Output is correct
33 Correct 3 ms 23244 KB Output is correct
34 Correct 45 ms 25428 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 283 ms 24656 KB Output is correct
2 Correct 271 ms 24608 KB Output is correct
3 Correct 259 ms 24776 KB Output is correct
4 Correct 247 ms 28176 KB Output is correct
5 Correct 267 ms 28356 KB Output is correct
6 Correct 79 ms 28104 KB Output is correct
7 Correct 79 ms 28036 KB Output is correct
8 Correct 82 ms 27980 KB Output is correct
9 Correct 84 ms 28168 KB Output is correct
10 Correct 97 ms 28416 KB Output is correct
11 Correct 166 ms 27512 KB Output is correct
12 Correct 190 ms 28104 KB Output is correct
13 Correct 164 ms 27492 KB Output is correct
14 Correct 169 ms 27792 KB Output is correct
15 Correct 186 ms 27916 KB Output is correct
16 Correct 3 ms 22876 KB Output is correct
17 Correct 80 ms 28156 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 267 ms 28284 KB Output is correct
2 Correct 269 ms 27588 KB Output is correct
3 Correct 263 ms 28356 KB Output is correct
4 Correct 278 ms 28304 KB Output is correct
5 Correct 288 ms 28504 KB Output is correct
6 Correct 79 ms 28104 KB Output is correct
7 Correct 87 ms 28128 KB Output is correct
8 Correct 84 ms 28100 KB Output is correct
9 Correct 90 ms 28492 KB Output is correct
10 Correct 89 ms 28100 KB Output is correct
11 Correct 177 ms 27820 KB Output is correct
12 Correct 167 ms 27540 KB Output is correct
13 Correct 175 ms 27528 KB Output is correct
14 Correct 177 ms 27836 KB Output is correct
15 Correct 178 ms 27776 KB Output is correct
16 Correct 3 ms 23128 KB Output is correct
17 Correct 84 ms 28444 KB Output is correct
18 Correct 10 ms 23128 KB Output is correct
19 Correct 9 ms 23132 KB Output is correct
20 Correct 9 ms 23132 KB Output is correct
21 Correct 10 ms 23132 KB Output is correct
22 Correct 10 ms 23128 KB Output is correct
23 Correct 7 ms 23132 KB Output is correct
24 Correct 6 ms 23204 KB Output is correct
25 Correct 7 ms 23132 KB Output is correct
26 Correct 8 ms 23300 KB Output is correct
27 Correct 7 ms 23128 KB Output is correct
28 Correct 8 ms 23188 KB Output is correct
29 Correct 7 ms 23132 KB Output is correct
30 Correct 7 ms 23176 KB Output is correct
31 Correct 8 ms 23132 KB Output is correct
32 Correct 8 ms 23224 KB Output is correct
33 Correct 3 ms 22872 KB Output is correct
34 Correct 6 ms 23132 KB Output is correct
35 Correct 64 ms 25924 KB Output is correct
36 Correct 61 ms 25680 KB Output is correct
37 Correct 62 ms 25748 KB Output is correct
38 Correct 57 ms 25616 KB Output is correct
39 Correct 59 ms 25824 KB Output is correct
40 Correct 59 ms 25684 KB Output is correct
41 Correct 58 ms 26000 KB Output is correct
42 Correct 57 ms 25680 KB Output is correct
43 Correct 55 ms 25608 KB Output is correct
44 Correct 54 ms 25428 KB Output is correct
45 Correct 45 ms 25152 KB Output is correct
46 Correct 43 ms 25168 KB Output is correct
47 Correct 43 ms 25172 KB Output is correct
48 Correct 44 ms 25300 KB Output is correct
49 Correct 42 ms 25168 KB Output is correct
50 Correct 3 ms 23244 KB Output is correct
51 Correct 45 ms 25428 KB Output is correct
52 Correct 283 ms 24656 KB Output is correct
53 Correct 271 ms 24608 KB Output is correct
54 Correct 259 ms 24776 KB Output is correct
55 Correct 247 ms 28176 KB Output is correct
56 Correct 267 ms 28356 KB Output is correct
57 Correct 79 ms 28104 KB Output is correct
58 Correct 79 ms 28036 KB Output is correct
59 Correct 82 ms 27980 KB Output is correct
60 Correct 84 ms 28168 KB Output is correct
61 Correct 97 ms 28416 KB Output is correct
62 Correct 166 ms 27512 KB Output is correct
63 Correct 190 ms 28104 KB Output is correct
64 Correct 164 ms 27492 KB Output is correct
65 Correct 169 ms 27792 KB Output is correct
66 Correct 186 ms 27916 KB Output is correct
67 Correct 3 ms 22876 KB Output is correct
68 Correct 80 ms 28156 KB Output is correct
69 Correct 346 ms 31944 KB Output is correct
70 Correct 394 ms 31860 KB Output is correct
71 Correct 330 ms 31568 KB Output is correct
72 Correct 342 ms 31688 KB Output is correct
73 Correct 360 ms 31756 KB Output is correct
74 Correct 183 ms 32276 KB Output is correct
75 Correct 167 ms 31700 KB Output is correct
76 Correct 175 ms 32204 KB Output is correct
77 Correct 165 ms 31616 KB Output is correct
78 Correct 195 ms 31688 KB Output is correct
79 Correct 236 ms 30708 KB Output is correct
80 Correct 216 ms 30532 KB Output is correct
81 Correct 225 ms 30256 KB Output is correct
82 Correct 238 ms 30716 KB Output is correct
83 Correct 211 ms 30468 KB Output is correct
84 Correct 3 ms 22872 KB Output is correct
85 Correct 130 ms 31756 KB Output is correct