#include <bits/stdc++.h>
#define int long long
using namespace std;
const int O = 4e5 + 5;
const int inf = 1e16;
int n, q, l[O], r[O], h[O], a[O], b[O], res[O], tree[O * 4], Min[O * 4], Max[O * 4];
vector <int> qu[O], in[O], out[O];
int Beauti(int x){
return max(1ll, x);
}
void Push(int id){
int &x = Min[id];
if (x == inf) return;
for (int i = 2 * id; i <= 2 * id + 1; ++ i){
Min[i] = min(Min[i], x);
tree[i] = max(tree[i], Max[i] - Min[i]);
}
x = inf; return;
}
void UpdateMax(int id, int l, int r, int u, int x){
if (l > u || r < u) return;
if (l == r){
Max[id] = x;
Min[id] = inf;
tree[id] = max(tree[id], Max[id] - Min[id]);
return;
}
int mid = (l + r) / 2; Push(id);
UpdateMax(id << 1, l, mid, u, x);
UpdateMax(id << 1 | 1, mid + 1, r, u, x);
tree[id] = max({tree[id], tree[id << 1], tree[id << 1 | 1], Max[id] - Min[id]});
Max[id] = max(Max[id << 1], Max[id << 1 | 1]);
}
void UpdateMin(int id, int l, int r, int u, int v, int x){
if (l > v || r < u) return;
if (u <= l && r <= v){
Min[id] = min(Min[id], x);
tree[id] = max(tree[id], Max[id] - Min[id]);
return;
}
int mid = (l + r) / 2; Push(id);
UpdateMin(id << 1, l, mid, u, v, x);
UpdateMin(id << 1 | 1, mid + 1, r, u, v, x);
tree[id] = max({tree[id], tree[id << 1], tree[id << 1 | 1], Max[id] - Min[id]});
Max[id] = max(Max[id << 1], Max[id << 1 | 1]);
}
int Get(int id, int l, int r, int u, int v){
if (l > v || r < u) return -inf;
if (u <= l && r <= v) return tree[id];
int mid = (l + r) / 2; Push(id);
return max(Get(id << 1, l, mid, u, v), Get(id << 1 | 1, mid + 1, r, u, v));
}
void solve(){
for (int i = 1; i <= q; ++ i) qu[r[i]].push_back(i);
for (int i = 1; i < O; ++ i){
tree[i] = -inf;
Max[i] = -inf;
Min[i] = inf;
}
for (int i = 1; i <= n; ++ i){
for (int j : in[i]){
UpdateMax(1, 1, n, j, h[j]);
}
for (int j : out[i]){
UpdateMax(1, 1, n, j, -inf);
}
if (i - a[i] >= 1) UpdateMin(1, 1, n, Beauti(i - b[i]), Beauti(i - a[i]), h[i]);
for (int j : qu[i]){
res[j] = max(res[j], Get(1, 1, n, l[j], i));
}
if (i + a[i] <= n) in[i + a[i]].push_back(i);
if (i + b[i] + 1 <= n) out[i + b[i] + 1].push_back(i);
}
for (int i = 1; i <= n; ++ i){
qu[i].clear();
in[i].clear();
out[i].clear();
}
}
main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin >> n;
for (int i = 1; i <= n; ++ i) cin >> h[i] >> a[i] >> b[i];
cin >> q;
for (int i = 1; i <= q; ++ i){
cin >> l[i] >> r[i];
res[i] = -1;
}
solve();
reverse(h + 1, h + n + 1);
reverse(a + 1, a + n + 1);
reverse(b + 1, b + n + 1);
for (int i = 1; i <= q; ++ i){
l[i] = n - l[i] + 1;
r[i] = n - r[i] + 1;
swap(l[i], r[i]);
}
solve();
for (int i = 1; i <= q; ++ i) cout << res[i] << "\n";
}
Compilation message
antennas.cpp:100:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
100 | main(){
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
37964 KB |
Output is correct |
2 |
Correct |
20 ms |
37980 KB |
Output is correct |
3 |
Correct |
21 ms |
37964 KB |
Output is correct |
4 |
Correct |
22 ms |
37964 KB |
Output is correct |
5 |
Correct |
24 ms |
37892 KB |
Output is correct |
6 |
Correct |
21 ms |
37888 KB |
Output is correct |
7 |
Correct |
20 ms |
37956 KB |
Output is correct |
8 |
Correct |
21 ms |
37956 KB |
Output is correct |
9 |
Correct |
20 ms |
37988 KB |
Output is correct |
10 |
Correct |
22 ms |
37888 KB |
Output is correct |
11 |
Correct |
21 ms |
37872 KB |
Output is correct |
12 |
Correct |
24 ms |
38000 KB |
Output is correct |
13 |
Correct |
22 ms |
37964 KB |
Output is correct |
14 |
Correct |
20 ms |
37964 KB |
Output is correct |
15 |
Correct |
23 ms |
37964 KB |
Output is correct |
16 |
Correct |
21 ms |
37908 KB |
Output is correct |
17 |
Correct |
21 ms |
37884 KB |
Output is correct |
18 |
Correct |
26 ms |
38052 KB |
Output is correct |
19 |
Correct |
20 ms |
37964 KB |
Output is correct |
20 |
Correct |
20 ms |
37932 KB |
Output is correct |
21 |
Correct |
21 ms |
37996 KB |
Output is correct |
22 |
Correct |
21 ms |
37972 KB |
Output is correct |
23 |
Correct |
20 ms |
37964 KB |
Output is correct |
24 |
Correct |
20 ms |
38000 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
37964 KB |
Output is correct |
2 |
Correct |
20 ms |
37980 KB |
Output is correct |
3 |
Correct |
21 ms |
37964 KB |
Output is correct |
4 |
Correct |
22 ms |
37964 KB |
Output is correct |
5 |
Correct |
24 ms |
37892 KB |
Output is correct |
6 |
Correct |
21 ms |
37888 KB |
Output is correct |
7 |
Correct |
20 ms |
37956 KB |
Output is correct |
8 |
Correct |
21 ms |
37956 KB |
Output is correct |
9 |
Correct |
20 ms |
37988 KB |
Output is correct |
10 |
Correct |
22 ms |
37888 KB |
Output is correct |
11 |
Correct |
21 ms |
37872 KB |
Output is correct |
12 |
Correct |
24 ms |
38000 KB |
Output is correct |
13 |
Correct |
22 ms |
37964 KB |
Output is correct |
14 |
Correct |
20 ms |
37964 KB |
Output is correct |
15 |
Correct |
23 ms |
37964 KB |
Output is correct |
16 |
Correct |
21 ms |
37908 KB |
Output is correct |
17 |
Correct |
21 ms |
37884 KB |
Output is correct |
18 |
Correct |
26 ms |
38052 KB |
Output is correct |
19 |
Correct |
20 ms |
37964 KB |
Output is correct |
20 |
Correct |
20 ms |
37932 KB |
Output is correct |
21 |
Correct |
21 ms |
37996 KB |
Output is correct |
22 |
Correct |
21 ms |
37972 KB |
Output is correct |
23 |
Correct |
20 ms |
37964 KB |
Output is correct |
24 |
Correct |
20 ms |
38000 KB |
Output is correct |
25 |
Correct |
101 ms |
45124 KB |
Output is correct |
26 |
Correct |
40 ms |
38712 KB |
Output is correct |
27 |
Correct |
144 ms |
47800 KB |
Output is correct |
28 |
Correct |
145 ms |
47632 KB |
Output is correct |
29 |
Correct |
102 ms |
45252 KB |
Output is correct |
30 |
Correct |
112 ms |
44584 KB |
Output is correct |
31 |
Correct |
122 ms |
47132 KB |
Output is correct |
32 |
Correct |
152 ms |
47508 KB |
Output is correct |
33 |
Correct |
131 ms |
47428 KB |
Output is correct |
34 |
Correct |
81 ms |
42580 KB |
Output is correct |
35 |
Correct |
142 ms |
48024 KB |
Output is correct |
36 |
Correct |
150 ms |
47628 KB |
Output is correct |
37 |
Correct |
91 ms |
43076 KB |
Output is correct |
38 |
Correct |
158 ms |
46632 KB |
Output is correct |
39 |
Correct |
41 ms |
39184 KB |
Output is correct |
40 |
Correct |
154 ms |
46724 KB |
Output is correct |
41 |
Correct |
111 ms |
44516 KB |
Output is correct |
42 |
Correct |
144 ms |
46596 KB |
Output is correct |
43 |
Correct |
64 ms |
40916 KB |
Output is correct |
44 |
Correct |
144 ms |
46612 KB |
Output is correct |
45 |
Correct |
43 ms |
39492 KB |
Output is correct |
46 |
Correct |
147 ms |
46608 KB |
Output is correct |
47 |
Correct |
51 ms |
40192 KB |
Output is correct |
48 |
Correct |
143 ms |
46532 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
404 ms |
50260 KB |
Output is correct |
2 |
Correct |
409 ms |
51264 KB |
Output is correct |
3 |
Correct |
256 ms |
48072 KB |
Output is correct |
4 |
Correct |
411 ms |
51312 KB |
Output is correct |
5 |
Correct |
201 ms |
44748 KB |
Output is correct |
6 |
Correct |
427 ms |
55864 KB |
Output is correct |
7 |
Correct |
338 ms |
53880 KB |
Output is correct |
8 |
Correct |
456 ms |
55968 KB |
Output is correct |
9 |
Correct |
79 ms |
40196 KB |
Output is correct |
10 |
Correct |
431 ms |
55828 KB |
Output is correct |
11 |
Correct |
237 ms |
47156 KB |
Output is correct |
12 |
Correct |
390 ms |
55840 KB |
Output is correct |
13 |
Correct |
226 ms |
53288 KB |
Output is correct |
14 |
Correct |
210 ms |
52692 KB |
Output is correct |
15 |
Correct |
213 ms |
51156 KB |
Output is correct |
16 |
Correct |
205 ms |
51300 KB |
Output is correct |
17 |
Correct |
236 ms |
53864 KB |
Output is correct |
18 |
Correct |
214 ms |
52376 KB |
Output is correct |
19 |
Correct |
229 ms |
52236 KB |
Output is correct |
20 |
Correct |
215 ms |
52228 KB |
Output is correct |
21 |
Correct |
201 ms |
52728 KB |
Output is correct |
22 |
Correct |
220 ms |
52496 KB |
Output is correct |
23 |
Correct |
215 ms |
52640 KB |
Output is correct |
24 |
Correct |
191 ms |
50308 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
37964 KB |
Output is correct |
2 |
Correct |
20 ms |
37980 KB |
Output is correct |
3 |
Correct |
21 ms |
37964 KB |
Output is correct |
4 |
Correct |
22 ms |
37964 KB |
Output is correct |
5 |
Correct |
24 ms |
37892 KB |
Output is correct |
6 |
Correct |
21 ms |
37888 KB |
Output is correct |
7 |
Correct |
20 ms |
37956 KB |
Output is correct |
8 |
Correct |
21 ms |
37956 KB |
Output is correct |
9 |
Correct |
20 ms |
37988 KB |
Output is correct |
10 |
Correct |
22 ms |
37888 KB |
Output is correct |
11 |
Correct |
21 ms |
37872 KB |
Output is correct |
12 |
Correct |
24 ms |
38000 KB |
Output is correct |
13 |
Correct |
22 ms |
37964 KB |
Output is correct |
14 |
Correct |
20 ms |
37964 KB |
Output is correct |
15 |
Correct |
23 ms |
37964 KB |
Output is correct |
16 |
Correct |
21 ms |
37908 KB |
Output is correct |
17 |
Correct |
21 ms |
37884 KB |
Output is correct |
18 |
Correct |
26 ms |
38052 KB |
Output is correct |
19 |
Correct |
20 ms |
37964 KB |
Output is correct |
20 |
Correct |
20 ms |
37932 KB |
Output is correct |
21 |
Correct |
21 ms |
37996 KB |
Output is correct |
22 |
Correct |
21 ms |
37972 KB |
Output is correct |
23 |
Correct |
20 ms |
37964 KB |
Output is correct |
24 |
Correct |
20 ms |
38000 KB |
Output is correct |
25 |
Correct |
101 ms |
45124 KB |
Output is correct |
26 |
Correct |
40 ms |
38712 KB |
Output is correct |
27 |
Correct |
144 ms |
47800 KB |
Output is correct |
28 |
Correct |
145 ms |
47632 KB |
Output is correct |
29 |
Correct |
102 ms |
45252 KB |
Output is correct |
30 |
Correct |
112 ms |
44584 KB |
Output is correct |
31 |
Correct |
122 ms |
47132 KB |
Output is correct |
32 |
Correct |
152 ms |
47508 KB |
Output is correct |
33 |
Correct |
131 ms |
47428 KB |
Output is correct |
34 |
Correct |
81 ms |
42580 KB |
Output is correct |
35 |
Correct |
142 ms |
48024 KB |
Output is correct |
36 |
Correct |
150 ms |
47628 KB |
Output is correct |
37 |
Correct |
91 ms |
43076 KB |
Output is correct |
38 |
Correct |
158 ms |
46632 KB |
Output is correct |
39 |
Correct |
41 ms |
39184 KB |
Output is correct |
40 |
Correct |
154 ms |
46724 KB |
Output is correct |
41 |
Correct |
111 ms |
44516 KB |
Output is correct |
42 |
Correct |
144 ms |
46596 KB |
Output is correct |
43 |
Correct |
64 ms |
40916 KB |
Output is correct |
44 |
Correct |
144 ms |
46612 KB |
Output is correct |
45 |
Correct |
43 ms |
39492 KB |
Output is correct |
46 |
Correct |
147 ms |
46608 KB |
Output is correct |
47 |
Correct |
51 ms |
40192 KB |
Output is correct |
48 |
Correct |
143 ms |
46532 KB |
Output is correct |
49 |
Correct |
404 ms |
50260 KB |
Output is correct |
50 |
Correct |
409 ms |
51264 KB |
Output is correct |
51 |
Correct |
256 ms |
48072 KB |
Output is correct |
52 |
Correct |
411 ms |
51312 KB |
Output is correct |
53 |
Correct |
201 ms |
44748 KB |
Output is correct |
54 |
Correct |
427 ms |
55864 KB |
Output is correct |
55 |
Correct |
338 ms |
53880 KB |
Output is correct |
56 |
Correct |
456 ms |
55968 KB |
Output is correct |
57 |
Correct |
79 ms |
40196 KB |
Output is correct |
58 |
Correct |
431 ms |
55828 KB |
Output is correct |
59 |
Correct |
237 ms |
47156 KB |
Output is correct |
60 |
Correct |
390 ms |
55840 KB |
Output is correct |
61 |
Correct |
226 ms |
53288 KB |
Output is correct |
62 |
Correct |
210 ms |
52692 KB |
Output is correct |
63 |
Correct |
213 ms |
51156 KB |
Output is correct |
64 |
Correct |
205 ms |
51300 KB |
Output is correct |
65 |
Correct |
236 ms |
53864 KB |
Output is correct |
66 |
Correct |
214 ms |
52376 KB |
Output is correct |
67 |
Correct |
229 ms |
52236 KB |
Output is correct |
68 |
Correct |
215 ms |
52228 KB |
Output is correct |
69 |
Correct |
201 ms |
52728 KB |
Output is correct |
70 |
Correct |
220 ms |
52496 KB |
Output is correct |
71 |
Correct |
215 ms |
52640 KB |
Output is correct |
72 |
Correct |
191 ms |
50308 KB |
Output is correct |
73 |
Incorrect |
606 ms |
65936 KB |
Output isn't correct |
74 |
Halted |
0 ms |
0 KB |
- |