oj.uz

Submission #503008

# Submission time Handle Problem Language Result Execution time Memory
503008 2022-01-06T21:58:11 Z sidon Two Antennas (JOI19_antennas) C++17
100 / 100
 775 ms 59584 KB 
#include <bits/stdc++.h>
using namespace std;

const int Z = 2e5, INF = 1e9+1;

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(0, 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 7 ms 10444 KB Output is correct
2 Correct 6 ms 10524 KB Output is correct
3 Correct 6 ms 10572 KB Output is correct
4 Correct 6 ms 10572 KB Output is correct
5 Correct 6 ms 10572 KB Output is correct
6 Correct 6 ms 10572 KB Output is correct
7 Correct 6 ms 10572 KB Output is correct
8 Correct 6 ms 10572 KB Output is correct
9 Correct 6 ms 10444 KB Output is correct
10 Correct 6 ms 10556 KB Output is correct
11 Correct 6 ms 10444 KB Output is correct
12 Correct 6 ms 10572 KB Output is correct
13 Correct 5 ms 10444 KB Output is correct
14 Correct 5 ms 10444 KB Output is correct
15 Correct 6 ms 10456 KB Output is correct
16 Correct 7 ms 10572 KB Output is correct
17 Correct 6 ms 10572 KB Output is correct
18 Correct 6 ms 10444 KB Output is correct
19 Correct 6 ms 10444 KB Output is correct
20 Correct 6 ms 10572 KB Output is correct
21 Correct 7 ms 10444 KB Output is correct
22 Correct 6 ms 10572 KB Output is correct
23 Correct 6 ms 10444 KB Output is correct
24 Correct 6 ms 10444 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 10444 KB Output is correct
2 Correct 6 ms 10524 KB Output is correct
3 Correct 6 ms 10572 KB Output is correct
4 Correct 6 ms 10572 KB Output is correct
5 Correct 6 ms 10572 KB Output is correct
6 Correct 6 ms 10572 KB Output is correct
7 Correct 6 ms 10572 KB Output is correct
8 Correct 6 ms 10572 KB Output is correct
9 Correct 6 ms 10444 KB Output is correct
10 Correct 6 ms 10556 KB Output is correct
11 Correct 6 ms 10444 KB Output is correct
12 Correct 6 ms 10572 KB Output is correct
13 Correct 5 ms 10444 KB Output is correct
14 Correct 5 ms 10444 KB Output is correct
15 Correct 6 ms 10456 KB Output is correct
16 Correct 7 ms 10572 KB Output is correct
17 Correct 6 ms 10572 KB Output is correct
18 Correct 6 ms 10444 KB Output is correct
19 Correct 6 ms 10444 KB Output is correct
20 Correct 6 ms 10572 KB Output is correct
21 Correct 7 ms 10444 KB Output is correct
22 Correct 6 ms 10572 KB Output is correct
23 Correct 6 ms 10444 KB Output is correct
24 Correct 6 ms 10444 KB Output is correct
25 Correct 65 ms 13900 KB Output is correct
26 Correct 19 ms 11212 KB Output is correct
27 Correct 122 ms 15196 KB Output is correct
28 Correct 111 ms 15300 KB Output is correct
29 Correct 66 ms 13912 KB Output is correct
30 Correct 73 ms 13828 KB Output is correct
31 Correct 77 ms 14640 KB Output is correct
32 Correct 129 ms 15428 KB Output is correct
33 Correct 90 ms 15004 KB Output is correct
34 Correct 52 ms 13020 KB Output is correct
35 Correct 98 ms 15184 KB Output is correct
36 Correct 103 ms 15376 KB Output is correct
37 Correct 76 ms 12804 KB Output is correct
38 Correct 101 ms 14308 KB Output is correct
39 Correct 24 ms 11312 KB Output is correct
40 Correct 110 ms 14404 KB Output is correct
41 Correct 73 ms 13380 KB Output is correct
42 Correct 97 ms 14392 KB Output is correct
43 Correct 41 ms 12136 KB Output is correct
44 Correct 97 ms 14404 KB Output is correct
45 Correct 22 ms 11460 KB Output is correct
46 Correct 100 ms 14384 KB Output is correct
47 Correct 31 ms 11724 KB Output is correct
48 Correct 99 ms 14392 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 341 ms 48404 KB Output is correct
2 Correct 416 ms 52768 KB Output is correct
3 Correct 255 ms 40132 KB Output is correct
4 Correct 407 ms 52716 KB Output is correct
5 Correct 141 ms 30020 KB Output is correct
6 Correct 407 ms 52644 KB Output is correct
7 Correct 343 ms 47108 KB Output is correct
8 Correct 480 ms 52664 KB Output is correct
9 Correct 47 ms 17164 KB Output is correct
10 Correct 414 ms 52660 KB Output is correct
11 Correct 236 ms 36912 KB Output is correct
12 Correct 430 ms 52712 KB Output is correct
13 Correct 245 ms 50732 KB Output is correct
14 Correct 239 ms 50816 KB Output is correct
15 Correct 234 ms 50756 KB Output is correct
16 Correct 206 ms 51116 KB Output is correct
17 Correct 276 ms 50944 KB Output is correct
18 Correct 226 ms 51224 KB Output is correct
19 Correct 241 ms 50612 KB Output is correct
20 Correct 228 ms 50708 KB Output is correct
21 Correct 229 ms 50520 KB Output is correct
22 Correct 235 ms 50828 KB Output is correct
23 Correct 238 ms 50592 KB Output is correct
24 Correct 209 ms 50660 KB Output is correct

Subtask #4
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 10444 KB Output is correct
2 Correct 6 ms 10524 KB Output is correct
3 Correct 6 ms 10572 KB Output is correct
4 Correct 6 ms 10572 KB Output is correct
5 Correct 6 ms 10572 KB Output is correct
6 Correct 6 ms 10572 KB Output is correct
7 Correct 6 ms 10572 KB Output is correct
8 Correct 6 ms 10572 KB Output is correct
9 Correct 6 ms 10444 KB Output is correct
10 Correct 6 ms 10556 KB Output is correct
11 Correct 6 ms 10444 KB Output is correct
12 Correct 6 ms 10572 KB Output is correct
13 Correct 5 ms 10444 KB Output is correct
14 Correct 5 ms 10444 KB Output is correct
15 Correct 6 ms 10456 KB Output is correct
16 Correct 7 ms 10572 KB Output is correct
17 Correct 6 ms 10572 KB Output is correct
18 Correct 6 ms 10444 KB Output is correct
19 Correct 6 ms 10444 KB Output is correct
20 Correct 6 ms 10572 KB Output is correct
21 Correct 7 ms 10444 KB Output is correct
22 Correct 6 ms 10572 KB Output is correct
23 Correct 6 ms 10444 KB Output is correct
24 Correct 6 ms 10444 KB Output is correct
25 Correct 65 ms 13900 KB Output is correct
26 Correct 19 ms 11212 KB Output is correct
27 Correct 122 ms 15196 KB Output is correct
28 Correct 111 ms 15300 KB Output is correct
29 Correct 66 ms 13912 KB Output is correct
30 Correct 73 ms 13828 KB Output is correct
31 Correct 77 ms 14640 KB Output is correct
32 Correct 129 ms 15428 KB Output is correct
33 Correct 90 ms 15004 KB Output is correct
34 Correct 52 ms 13020 KB Output is correct
35 Correct 98 ms 15184 KB Output is correct
36 Correct 103 ms 15376 KB Output is correct
37 Correct 76 ms 12804 KB Output is correct
38 Correct 101 ms 14308 KB Output is correct
39 Correct 24 ms 11312 KB Output is correct
40 Correct 110 ms 14404 KB Output is correct
41 Correct 73 ms 13380 KB Output is correct
42 Correct 97 ms 14392 KB Output is correct
43 Correct 41 ms 12136 KB Output is correct
44 Correct 97 ms 14404 KB Output is correct
45 Correct 22 ms 11460 KB Output is correct
46 Correct 100 ms 14384 KB Output is correct
47 Correct 31 ms 11724 KB Output is correct
48 Correct 99 ms 14392 KB Output is correct
49 Correct 341 ms 48404 KB Output is correct
50 Correct 416 ms 52768 KB Output is correct
51 Correct 255 ms 40132 KB Output is correct
52 Correct 407 ms 52716 KB Output is correct
53 Correct 141 ms 30020 KB Output is correct
54 Correct 407 ms 52644 KB Output is correct
55 Correct 343 ms 47108 KB Output is correct
56 Correct 480 ms 52664 KB Output is correct
57 Correct 47 ms 17164 KB Output is correct
58 Correct 414 ms 52660 KB Output is correct
59 Correct 236 ms 36912 KB Output is correct
60 Correct 430 ms 52712 KB Output is correct
61 Correct 245 ms 50732 KB Output is correct
62 Correct 239 ms 50816 KB Output is correct
63 Correct 234 ms 50756 KB Output is correct
64 Correct 206 ms 51116 KB Output is correct
65 Correct 276 ms 50944 KB Output is correct
66 Correct 226 ms 51224 KB Output is correct
67 Correct 241 ms 50612 KB Output is correct
68 Correct 228 ms 50708 KB Output is correct
69 Correct 229 ms 50520 KB Output is correct
70 Correct 235 ms 50828 KB Output is correct
71 Correct 238 ms 50592 KB Output is correct
72 Correct 209 ms 50660 KB Output is correct
73 Correct 633 ms 53752 KB Output is correct
74 Correct 424 ms 53388 KB Output is correct
75 Correct 560 ms 46444 KB Output is correct
76 Correct 775 ms 59540 KB Output is correct
77 Correct 339 ms 34500 KB Output is correct
78 Correct 620 ms 57492 KB Output is correct
79 Correct 632 ms 53600 KB Output is correct
80 Correct 722 ms 59584 KB Output is correct
81 Correct 191 ms 22060 KB Output is correct
82 Correct 608 ms 56460 KB Output is correct
83 Correct 480 ms 43084 KB Output is correct
84 Correct 748 ms 59464 KB Output is correct
85 Correct 430 ms 54348 KB Output is correct
86 Correct 529 ms 56368 KB Output is correct
87 Correct 306 ms 51804 KB Output is correct
88 Correct 503 ms 56764 KB Output is correct
89 Correct 482 ms 55268 KB Output is correct
90 Correct 612 ms 56872 KB Output is correct
91 Correct 374 ms 52928 KB Output is correct
92 Correct 539 ms 56264 KB Output is correct
93 Correct 285 ms 51876 KB Output is correct
94 Correct 519 ms 56464 KB Output is correct
95 Correct 318 ms 52560 KB Output is correct
96 Correct 555 ms 56312 KB Output is correct