#include <bits/stdc++.h>
#define int long long
using namespace std;
const int O = 1e6 + 5;
const int inf = 1e18;
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){
tree[i] = max(tree[i], Max[i] - x);
Min[i] = min(Min[i], x);
}
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] = 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]});
}
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:99:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
99 | main(){
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
45 ms |
94280 KB |
Output is correct |
2 |
Correct |
45 ms |
94352 KB |
Output is correct |
3 |
Correct |
45 ms |
94316 KB |
Output is correct |
4 |
Correct |
60 ms |
94308 KB |
Output is correct |
5 |
Correct |
48 ms |
94328 KB |
Output is correct |
6 |
Correct |
47 ms |
94332 KB |
Output is correct |
7 |
Correct |
53 ms |
94300 KB |
Output is correct |
8 |
Correct |
48 ms |
94244 KB |
Output is correct |
9 |
Correct |
48 ms |
94312 KB |
Output is correct |
10 |
Correct |
47 ms |
94368 KB |
Output is correct |
11 |
Correct |
46 ms |
94304 KB |
Output is correct |
12 |
Correct |
46 ms |
94264 KB |
Output is correct |
13 |
Correct |
50 ms |
94244 KB |
Output is correct |
14 |
Correct |
48 ms |
94264 KB |
Output is correct |
15 |
Correct |
50 ms |
94284 KB |
Output is correct |
16 |
Correct |
47 ms |
94276 KB |
Output is correct |
17 |
Correct |
46 ms |
94256 KB |
Output is correct |
18 |
Correct |
47 ms |
94248 KB |
Output is correct |
19 |
Correct |
49 ms |
94276 KB |
Output is correct |
20 |
Correct |
47 ms |
94328 KB |
Output is correct |
21 |
Correct |
47 ms |
94276 KB |
Output is correct |
22 |
Correct |
47 ms |
94284 KB |
Output is correct |
23 |
Correct |
48 ms |
94328 KB |
Output is correct |
24 |
Correct |
53 ms |
94312 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
45 ms |
94280 KB |
Output is correct |
2 |
Correct |
45 ms |
94352 KB |
Output is correct |
3 |
Correct |
45 ms |
94316 KB |
Output is correct |
4 |
Correct |
60 ms |
94308 KB |
Output is correct |
5 |
Correct |
48 ms |
94328 KB |
Output is correct |
6 |
Correct |
47 ms |
94332 KB |
Output is correct |
7 |
Correct |
53 ms |
94300 KB |
Output is correct |
8 |
Correct |
48 ms |
94244 KB |
Output is correct |
9 |
Correct |
48 ms |
94312 KB |
Output is correct |
10 |
Correct |
47 ms |
94368 KB |
Output is correct |
11 |
Correct |
46 ms |
94304 KB |
Output is correct |
12 |
Correct |
46 ms |
94264 KB |
Output is correct |
13 |
Correct |
50 ms |
94244 KB |
Output is correct |
14 |
Correct |
48 ms |
94264 KB |
Output is correct |
15 |
Correct |
50 ms |
94284 KB |
Output is correct |
16 |
Correct |
47 ms |
94276 KB |
Output is correct |
17 |
Correct |
46 ms |
94256 KB |
Output is correct |
18 |
Correct |
47 ms |
94248 KB |
Output is correct |
19 |
Correct |
49 ms |
94276 KB |
Output is correct |
20 |
Correct |
47 ms |
94328 KB |
Output is correct |
21 |
Correct |
47 ms |
94276 KB |
Output is correct |
22 |
Correct |
47 ms |
94284 KB |
Output is correct |
23 |
Correct |
48 ms |
94328 KB |
Output is correct |
24 |
Correct |
53 ms |
94312 KB |
Output is correct |
25 |
Correct |
136 ms |
101468 KB |
Output is correct |
26 |
Correct |
59 ms |
95096 KB |
Output is correct |
27 |
Correct |
179 ms |
104100 KB |
Output is correct |
28 |
Correct |
187 ms |
103892 KB |
Output is correct |
29 |
Correct |
133 ms |
101700 KB |
Output is correct |
30 |
Correct |
132 ms |
100888 KB |
Output is correct |
31 |
Correct |
145 ms |
103484 KB |
Output is correct |
32 |
Correct |
174 ms |
103856 KB |
Output is correct |
33 |
Correct |
160 ms |
103880 KB |
Output is correct |
34 |
Correct |
112 ms |
99164 KB |
Output is correct |
35 |
Correct |
176 ms |
104376 KB |
Output is correct |
36 |
Correct |
175 ms |
103980 KB |
Output is correct |
37 |
Correct |
119 ms |
99376 KB |
Output is correct |
38 |
Correct |
169 ms |
103000 KB |
Output is correct |
39 |
Correct |
73 ms |
95640 KB |
Output is correct |
40 |
Correct |
172 ms |
102980 KB |
Output is correct |
41 |
Correct |
137 ms |
101012 KB |
Output is correct |
42 |
Correct |
177 ms |
102944 KB |
Output is correct |
43 |
Correct |
88 ms |
97352 KB |
Output is correct |
44 |
Correct |
178 ms |
102980 KB |
Output is correct |
45 |
Correct |
69 ms |
95812 KB |
Output is correct |
46 |
Correct |
173 ms |
102992 KB |
Output is correct |
47 |
Correct |
80 ms |
96524 KB |
Output is correct |
48 |
Correct |
175 ms |
102976 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
391 ms |
103776 KB |
Output is correct |
2 |
Correct |
420 ms |
104692 KB |
Output is correct |
3 |
Correct |
322 ms |
101564 KB |
Output is correct |
4 |
Correct |
407 ms |
104740 KB |
Output is correct |
5 |
Correct |
197 ms |
99140 KB |
Output is correct |
6 |
Correct |
415 ms |
104700 KB |
Output is correct |
7 |
Correct |
378 ms |
103304 KB |
Output is correct |
8 |
Correct |
408 ms |
104760 KB |
Output is correct |
9 |
Correct |
83 ms |
95924 KB |
Output is correct |
10 |
Correct |
437 ms |
104804 KB |
Output is correct |
11 |
Correct |
242 ms |
100860 KB |
Output is correct |
12 |
Correct |
409 ms |
104816 KB |
Output is correct |
13 |
Correct |
245 ms |
103972 KB |
Output is correct |
14 |
Correct |
233 ms |
103728 KB |
Output is correct |
15 |
Correct |
236 ms |
102864 KB |
Output is correct |
16 |
Correct |
213 ms |
102728 KB |
Output is correct |
17 |
Correct |
249 ms |
104368 KB |
Output is correct |
18 |
Correct |
232 ms |
103376 KB |
Output is correct |
19 |
Correct |
237 ms |
103536 KB |
Output is correct |
20 |
Correct |
244 ms |
103676 KB |
Output is correct |
21 |
Correct |
229 ms |
103588 KB |
Output is correct |
22 |
Correct |
236 ms |
103544 KB |
Output is correct |
23 |
Correct |
233 ms |
103752 KB |
Output is correct |
24 |
Correct |
210 ms |
102264 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
45 ms |
94280 KB |
Output is correct |
2 |
Correct |
45 ms |
94352 KB |
Output is correct |
3 |
Correct |
45 ms |
94316 KB |
Output is correct |
4 |
Correct |
60 ms |
94308 KB |
Output is correct |
5 |
Correct |
48 ms |
94328 KB |
Output is correct |
6 |
Correct |
47 ms |
94332 KB |
Output is correct |
7 |
Correct |
53 ms |
94300 KB |
Output is correct |
8 |
Correct |
48 ms |
94244 KB |
Output is correct |
9 |
Correct |
48 ms |
94312 KB |
Output is correct |
10 |
Correct |
47 ms |
94368 KB |
Output is correct |
11 |
Correct |
46 ms |
94304 KB |
Output is correct |
12 |
Correct |
46 ms |
94264 KB |
Output is correct |
13 |
Correct |
50 ms |
94244 KB |
Output is correct |
14 |
Correct |
48 ms |
94264 KB |
Output is correct |
15 |
Correct |
50 ms |
94284 KB |
Output is correct |
16 |
Correct |
47 ms |
94276 KB |
Output is correct |
17 |
Correct |
46 ms |
94256 KB |
Output is correct |
18 |
Correct |
47 ms |
94248 KB |
Output is correct |
19 |
Correct |
49 ms |
94276 KB |
Output is correct |
20 |
Correct |
47 ms |
94328 KB |
Output is correct |
21 |
Correct |
47 ms |
94276 KB |
Output is correct |
22 |
Correct |
47 ms |
94284 KB |
Output is correct |
23 |
Correct |
48 ms |
94328 KB |
Output is correct |
24 |
Correct |
53 ms |
94312 KB |
Output is correct |
25 |
Correct |
136 ms |
101468 KB |
Output is correct |
26 |
Correct |
59 ms |
95096 KB |
Output is correct |
27 |
Correct |
179 ms |
104100 KB |
Output is correct |
28 |
Correct |
187 ms |
103892 KB |
Output is correct |
29 |
Correct |
133 ms |
101700 KB |
Output is correct |
30 |
Correct |
132 ms |
100888 KB |
Output is correct |
31 |
Correct |
145 ms |
103484 KB |
Output is correct |
32 |
Correct |
174 ms |
103856 KB |
Output is correct |
33 |
Correct |
160 ms |
103880 KB |
Output is correct |
34 |
Correct |
112 ms |
99164 KB |
Output is correct |
35 |
Correct |
176 ms |
104376 KB |
Output is correct |
36 |
Correct |
175 ms |
103980 KB |
Output is correct |
37 |
Correct |
119 ms |
99376 KB |
Output is correct |
38 |
Correct |
169 ms |
103000 KB |
Output is correct |
39 |
Correct |
73 ms |
95640 KB |
Output is correct |
40 |
Correct |
172 ms |
102980 KB |
Output is correct |
41 |
Correct |
137 ms |
101012 KB |
Output is correct |
42 |
Correct |
177 ms |
102944 KB |
Output is correct |
43 |
Correct |
88 ms |
97352 KB |
Output is correct |
44 |
Correct |
178 ms |
102980 KB |
Output is correct |
45 |
Correct |
69 ms |
95812 KB |
Output is correct |
46 |
Correct |
173 ms |
102992 KB |
Output is correct |
47 |
Correct |
80 ms |
96524 KB |
Output is correct |
48 |
Correct |
175 ms |
102976 KB |
Output is correct |
49 |
Correct |
391 ms |
103776 KB |
Output is correct |
50 |
Correct |
420 ms |
104692 KB |
Output is correct |
51 |
Correct |
322 ms |
101564 KB |
Output is correct |
52 |
Correct |
407 ms |
104740 KB |
Output is correct |
53 |
Correct |
197 ms |
99140 KB |
Output is correct |
54 |
Correct |
415 ms |
104700 KB |
Output is correct |
55 |
Correct |
378 ms |
103304 KB |
Output is correct |
56 |
Correct |
408 ms |
104760 KB |
Output is correct |
57 |
Correct |
83 ms |
95924 KB |
Output is correct |
58 |
Correct |
437 ms |
104804 KB |
Output is correct |
59 |
Correct |
242 ms |
100860 KB |
Output is correct |
60 |
Correct |
409 ms |
104816 KB |
Output is correct |
61 |
Correct |
245 ms |
103972 KB |
Output is correct |
62 |
Correct |
233 ms |
103728 KB |
Output is correct |
63 |
Correct |
236 ms |
102864 KB |
Output is correct |
64 |
Correct |
213 ms |
102728 KB |
Output is correct |
65 |
Correct |
249 ms |
104368 KB |
Output is correct |
66 |
Correct |
232 ms |
103376 KB |
Output is correct |
67 |
Correct |
237 ms |
103536 KB |
Output is correct |
68 |
Correct |
244 ms |
103676 KB |
Output is correct |
69 |
Correct |
229 ms |
103588 KB |
Output is correct |
70 |
Correct |
236 ms |
103544 KB |
Output is correct |
71 |
Correct |
233 ms |
103752 KB |
Output is correct |
72 |
Correct |
210 ms |
102264 KB |
Output is correct |
73 |
Correct |
617 ms |
113440 KB |
Output is correct |
74 |
Correct |
446 ms |
106100 KB |
Output is correct |
75 |
Correct |
585 ms |
113480 KB |
Output is correct |
76 |
Correct |
738 ms |
117452 KB |
Output is correct |
77 |
Correct |
413 ms |
107644 KB |
Output is correct |
78 |
Correct |
641 ms |
113972 KB |
Output is correct |
79 |
Correct |
686 ms |
115780 KB |
Output is correct |
80 |
Correct |
776 ms |
117308 KB |
Output is correct |
81 |
Correct |
279 ms |
105828 KB |
Output is correct |
82 |
Correct |
644 ms |
111740 KB |
Output is correct |
83 |
Correct |
546 ms |
112356 KB |
Output is correct |
84 |
Correct |
764 ms |
117296 KB |
Output is correct |
85 |
Correct |
445 ms |
111420 KB |
Output is correct |
86 |
Correct |
565 ms |
115140 KB |
Output is correct |
87 |
Correct |
275 ms |
105044 KB |
Output is correct |
88 |
Correct |
554 ms |
114340 KB |
Output is correct |
89 |
Correct |
484 ms |
113428 KB |
Output is correct |
90 |
Correct |
560 ms |
114792 KB |
Output is correct |
91 |
Correct |
354 ms |
108216 KB |
Output is correct |
92 |
Correct |
590 ms |
115144 KB |
Output is correct |
93 |
Correct |
300 ms |
106308 KB |
Output is correct |
94 |
Correct |
559 ms |
114976 KB |
Output is correct |
95 |
Correct |
332 ms |
107508 KB |
Output is correct |
96 |
Correct |
527 ms |
113752 KB |
Output is correct |