oj.uz

Submission #503007

# Submission time Handle Problem Language Result Execution time Memory
503007 2022-01-06T21:56:28 Z sidon Two Antennas (JOI19_antennas) C++17
100 / 100
 781 ms 77156 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

const int Z = 2e5, INF = 1e12;

int sL, sR, sV;
struct SegmentTree{
	int l, r, x = INF, y = -INF, res = -INF;
	SegmentTree *L, *R;
	void pull() {
		x = min(L->x, R->x);
		res = max({L->res, R->res, y - x});
	}
	void apply(int val) {
		y = max(y, val);
		res = max(res, y - x);
	}
	void push() {
		L->apply(y), R->apply(y);
		y = -INF;
	}
	SegmentTree(int lx, int rx) : l(lx), r(rx) {
		if(r - l < 2) return;
		int m = (l + r) / 2;
		L = new SegmentTree(l, m);
		R = new SegmentTree(m, r);
	}
	void rangeMaximise() {
		if(sL<=l && r<=sR) return apply(sV);
		if(sR<=l || r<=sL) return;
		push();
		L->rangeMaximise(), R->rangeMaximise();
		pull();
	}
	void pointUpdate() {
		if(r - l < 2)
			y = -INF, x = sV, res = max(res, y - x);
		else
			push(), (sL < L->r ? L : R)->pointUpdate(), pull();
	}
	int rangeMaxDiff() {
		if(sL<=l && r<=sR) return res;
		if(sR<=l || r<=sL) return -INF;
		push();
		return max(L->rangeMaxDiff(), R->rangeMaxDiff());
	}
};

int N, Q, H[Z], A[Z], B[Z], qL[Z], ans[Z];
vector<int> add[Z+1], qAt[Z];

signed main() {
	ios::sync_with_stdio(0); cin.tie(0);

	cin >> N;

	for(int i = 0; i < N; ++i) {
		cin >> H[i] >> A[i] >> B[i];

		if(i + A[i] <  N) {
			add[i + A[i]].push_back(i);
			add[min(N, i+B[i]+1)].push_back(-i-1);
		}
	}
	cin >> Q;
	
	for(int i = 0, qR; i < Q; ++i) {
		cin >> qL[i] >> qR;
		--qL[i];
		qAt[--qR].push_back(i);
		ans[i] = -1;
	}

	for(int _ : {1, 0}) {
		SegmentTree st(0, N);
		for(int i = 0; i < N; ++i) {
			for(int &j : add[i])
				sL = max(j, -j-1), sV = j < 0 ? INF : H[j], st.pointUpdate();
			if(i - A[i] >= 0) 
				sL = max(0LL, i-B[i]), sR = i-A[i]+1, sV = H[i], st.rangeMaximise();
			for(int &j : qAt[i])
				sL = qL[j], sR = N, ans[j] = max(ans[j], st.rangeMaxDiff());
		}
		if(_) for(int &i : H) i = -i;
	}

	for(int i = 0; i < Q; ++i)
		cout << ans[i] << '\n';
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 11396 KB Output is correct
2 Correct 7 ms 11364 KB Output is correct
3 Correct 6 ms 11248 KB Output is correct
4 Correct 7 ms 11364 KB Output is correct
5 Correct 7 ms 11360 KB Output is correct
6 Correct 6 ms 11468 KB Output is correct
7 Correct 6 ms 11380 KB Output is correct
8 Correct 6 ms 11388 KB Output is correct
9 Correct 6 ms 11340 KB Output is correct
10 Correct 6 ms 11372 KB Output is correct
11 Correct 6 ms 11212 KB Output is correct
12 Correct 6 ms 11412 KB Output is correct
13 Correct 6 ms 11340 KB Output is correct
14 Correct 6 ms 11384 KB Output is correct
15 Correct 6 ms 11340 KB Output is correct
16 Correct 6 ms 11388 KB Output is correct
17 Correct 6 ms 11356 KB Output is correct
18 Correct 7 ms 11340 KB Output is correct
19 Correct 6 ms 11340 KB Output is correct
20 Correct 6 ms 11384 KB Output is correct
21 Correct 6 ms 11340 KB Output is correct
22 Correct 7 ms 11376 KB Output is correct
23 Correct 6 ms 11384 KB Output is correct
24 Correct 6 ms 11320 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 11396 KB Output is correct
2 Correct 7 ms 11364 KB Output is correct
3 Correct 6 ms 11248 KB Output is correct
4 Correct 7 ms 11364 KB Output is correct
5 Correct 7 ms 11360 KB Output is correct
6 Correct 6 ms 11468 KB Output is correct
7 Correct 6 ms 11380 KB Output is correct
8 Correct 6 ms 11388 KB Output is correct
9 Correct 6 ms 11340 KB Output is correct
10 Correct 6 ms 11372 KB Output is correct
11 Correct 6 ms 11212 KB Output is correct
12 Correct 6 ms 11412 KB Output is correct
13 Correct 6 ms 11340 KB Output is correct
14 Correct 6 ms 11384 KB Output is correct
15 Correct 6 ms 11340 KB Output is correct
16 Correct 6 ms 11388 KB Output is correct
17 Correct 6 ms 11356 KB Output is correct
18 Correct 7 ms 11340 KB Output is correct
19 Correct 6 ms 11340 KB Output is correct
20 Correct 6 ms 11384 KB Output is correct
21 Correct 6 ms 11340 KB Output is correct
22 Correct 7 ms 11376 KB Output is correct
23 Correct 6 ms 11384 KB Output is correct
24 Correct 6 ms 11320 KB Output is correct
25 Correct 71 ms 17508 KB Output is correct
26 Correct 15 ms 12508 KB Output is correct
27 Correct 99 ms 19568 KB Output is correct
28 Correct 101 ms 19708 KB Output is correct
29 Correct 69 ms 17476 KB Output is correct
30 Correct 76 ms 17324 KB Output is correct
31 Correct 81 ms 18784 KB Output is correct
32 Correct 102 ms 19632 KB Output is correct
33 Correct 95 ms 19100 KB Output is correct
34 Correct 52 ms 15948 KB Output is correct
35 Correct 108 ms 19520 KB Output is correct
36 Correct 104 ms 19652 KB Output is correct
37 Correct 72 ms 16184 KB Output is correct
38 Correct 101 ms 18732 KB Output is correct
39 Correct 21 ms 12876 KB Output is correct
40 Correct 98 ms 18748 KB Output is correct
41 Correct 85 ms 17060 KB Output is correct
42 Correct 101 ms 18712 KB Output is correct
43 Correct 37 ms 14460 KB Output is correct
44 Correct 98 ms 18736 KB Output is correct
45 Correct 23 ms 13124 KB Output is correct
46 Correct 99 ms 18740 KB Output is correct
47 Correct 33 ms 13812 KB Output is correct
48 Correct 99 ms 18716 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 388 ms 62896 KB Output is correct
2 Correct 458 ms 68692 KB Output is correct
3 Correct 294 ms 51796 KB Output is correct
4 Correct 445 ms 68700 KB Output is correct
5 Correct 168 ms 38208 KB Output is correct
6 Correct 434 ms 68660 KB Output is correct
7 Correct 412 ms 61220 KB Output is correct
8 Correct 465 ms 68692 KB Output is correct
9 Correct 48 ms 20880 KB Output is correct
10 Correct 447 ms 68712 KB Output is correct
11 Correct 248 ms 47492 KB Output is correct
12 Correct 424 ms 68780 KB Output is correct
13 Correct 251 ms 67196 KB Output is correct
14 Correct 239 ms 67208 KB Output is correct
15 Correct 232 ms 67228 KB Output is correct
16 Correct 207 ms 67720 KB Output is correct
17 Correct 265 ms 67352 KB Output is correct
18 Correct 233 ms 67800 KB Output is correct
19 Correct 243 ms 66800 KB Output is correct
20 Correct 229 ms 66740 KB Output is correct
21 Correct 224 ms 66520 KB Output is correct
22 Correct 236 ms 66852 KB Output is correct
23 Correct 236 ms 66672 KB Output is correct
24 Correct 211 ms 66748 KB Output is correct

Subtask #4
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 11396 KB Output is correct
2 Correct 7 ms 11364 KB Output is correct
3 Correct 6 ms 11248 KB Output is correct
4 Correct 7 ms 11364 KB Output is correct
5 Correct 7 ms 11360 KB Output is correct
6 Correct 6 ms 11468 KB Output is correct
7 Correct 6 ms 11380 KB Output is correct
8 Correct 6 ms 11388 KB Output is correct
9 Correct 6 ms 11340 KB Output is correct
10 Correct 6 ms 11372 KB Output is correct
11 Correct 6 ms 11212 KB Output is correct
12 Correct 6 ms 11412 KB Output is correct
13 Correct 6 ms 11340 KB Output is correct
14 Correct 6 ms 11384 KB Output is correct
15 Correct 6 ms 11340 KB Output is correct
16 Correct 6 ms 11388 KB Output is correct
17 Correct 6 ms 11356 KB Output is correct
18 Correct 7 ms 11340 KB Output is correct
19 Correct 6 ms 11340 KB Output is correct
20 Correct 6 ms 11384 KB Output is correct
21 Correct 6 ms 11340 KB Output is correct
22 Correct 7 ms 11376 KB Output is correct
23 Correct 6 ms 11384 KB Output is correct
24 Correct 6 ms 11320 KB Output is correct
25 Correct 71 ms 17508 KB Output is correct
26 Correct 15 ms 12508 KB Output is correct
27 Correct 99 ms 19568 KB Output is correct
28 Correct 101 ms 19708 KB Output is correct
29 Correct 69 ms 17476 KB Output is correct
30 Correct 76 ms 17324 KB Output is correct
31 Correct 81 ms 18784 KB Output is correct
32 Correct 102 ms 19632 KB Output is correct
33 Correct 95 ms 19100 KB Output is correct
34 Correct 52 ms 15948 KB Output is correct
35 Correct 108 ms 19520 KB Output is correct
36 Correct 104 ms 19652 KB Output is correct
37 Correct 72 ms 16184 KB Output is correct
38 Correct 101 ms 18732 KB Output is correct
39 Correct 21 ms 12876 KB Output is correct
40 Correct 98 ms 18748 KB Output is correct
41 Correct 85 ms 17060 KB Output is correct
42 Correct 101 ms 18712 KB Output is correct
43 Correct 37 ms 14460 KB Output is correct
44 Correct 98 ms 18736 KB Output is correct
45 Correct 23 ms 13124 KB Output is correct
46 Correct 99 ms 18740 KB Output is correct
47 Correct 33 ms 13812 KB Output is correct
48 Correct 99 ms 18716 KB Output is correct
49 Correct 388 ms 62896 KB Output is correct
50 Correct 458 ms 68692 KB Output is correct
51 Correct 294 ms 51796 KB Output is correct
52 Correct 445 ms 68700 KB Output is correct
53 Correct 168 ms 38208 KB Output is correct
54 Correct 434 ms 68660 KB Output is correct
55 Correct 412 ms 61220 KB Output is correct
56 Correct 465 ms 68692 KB Output is correct
57 Correct 48 ms 20880 KB Output is correct
58 Correct 447 ms 68712 KB Output is correct
59 Correct 248 ms 47492 KB Output is correct
60 Correct 424 ms 68780 KB Output is correct
61 Correct 251 ms 67196 KB Output is correct
62 Correct 239 ms 67208 KB Output is correct
63 Correct 232 ms 67228 KB Output is correct
64 Correct 207 ms 67720 KB Output is correct
65 Correct 265 ms 67352 KB Output is correct
66 Correct 233 ms 67800 KB Output is correct
67 Correct 243 ms 66800 KB Output is correct
68 Correct 229 ms 66740 KB Output is correct
69 Correct 224 ms 66520 KB Output is correct
70 Correct 236 ms 66852 KB Output is correct
71 Correct 236 ms 66672 KB Output is correct
72 Correct 211 ms 66748 KB Output is correct
73 Correct 658 ms 69312 KB Output is correct
74 Correct 476 ms 69116 KB Output is correct
75 Correct 574 ms 59920 KB Output is correct
76 Correct 781 ms 77120 KB Output is correct
77 Correct 351 ms 44076 KB Output is correct
78 Correct 682 ms 74344 KB Output is correct
79 Correct 692 ms 69436 KB Output is correct
80 Correct 770 ms 77152 KB Output is correct
81 Correct 214 ms 28012 KB Output is correct
82 Correct 597 ms 72832 KB Output is correct
83 Correct 531 ms 55496 KB Output is correct
84 Correct 775 ms 77156 KB Output is correct
85 Correct 435 ms 71408 KB Output is correct
86 Correct 599 ms 74504 KB Output is correct
87 Correct 284 ms 68028 KB Output is correct
88 Correct 544 ms 74988 KB Output is correct
89 Correct 507 ms 72828 KB Output is correct
90 Correct 569 ms 75076 KB Output is correct
91 Correct 359 ms 69464 KB Output is correct
92 Correct 608 ms 74344 KB Output is correct
93 Correct 286 ms 68100 KB Output is correct
94 Correct 573 ms 74600 KB Output is correct
95 Correct 332 ms 68992 KB Output is correct
96 Correct 528 ms 74268 KB Output is correct