#include<bits/stdc++.h>
using namespace std;
typedef long long llint;
typedef pair <llint, llint> pi;
const int MAXN = 200005;
const int MAXM = 2005;
const llint INF = 1000000000000000000LL;
int n, q, ofs = 1;
int h[MAXN], a[MAXN], b[MAXN];
int cost[MAXM][MAXM], dp[MAXM][MAXM], res[MAXM][MAXM];
vector <int> v[MAXN];
llint mx[MAXN * 4], mn[MAXN * 4];
void precompute () {
memset(cost, -1, sizeof cost);
memset(dp, -1, sizeof dp);
memset(res, -1, sizeof res);
for (int i = 1; i <= n; i++) {
for (int j = i + 1; j <= n; j++) {
if (a[i] <= j - i && j - i <= b[i] && a[j] <= j - i && j - i <= b[j]) {
cost[i][j] = abs(h[i] - h[j]);
}
dp[i][j] = max(dp[i][j - 1], cost[i][j]);
}
}
for (int rig = 1; rig <= n; rig++) {
for (int lef = rig - 1; lef >= 1; lef--) {
res[lef][rig] = max(res[lef + 1][rig], dp[lef][rig]);
}
}
}
void update (int pos, int val, bool flg) {
//cout << "update " << pos << " " << val << " " << flg << endl;
pos += ofs;
if (flg == 1) {
mn[pos] = mx[pos] = val;
} else {
mn[pos] = INF; mx[pos] = -INF;
}
pos /= 2;
while (pos > 0) {
mn[pos] = min(mn[pos * 2], mn[pos * 2 + 1]);
mx[pos] = max(mx[pos * 2], mx[pos * 2 + 1]);
pos /= 2;
}
}
pi upit (int x, int from, int to, int lo, int hi) {
if (from <= lo && hi <= to) return {mn[x], mx[x]};
if (to < lo || hi < from) return {INF, -INF};
pi lef = upit(2 * x, from, to, lo, (lo + hi) / 2);
pi rig = upit(2 * x + 1, from, to, (lo + hi) / 2 + 1, hi);
return {min(lef.first, rig.first), max(lef.second, rig.second)};
}
void sweep () {
for (int i = 1; i <= n; i++) {
int lo = i + a[i], hi = i + b[i];
if (lo <= n) v[lo].push_back(i);
if (hi + 1 <= n) v[hi + 1].push_back(-i);
}
llint sol = 0;
for (int i = 1; i <= n; i++) {
for (auto x : v[i]) {
if (x > 0) {
update(x, h[x], 1);
} else {
update(-x, 0, 0);
}
}
int lo = i - b[i], hi = i - a[i];
if (hi < 1) continue;
lo = max(lo, 1);
//cout << "bla " << lo << " " << hi << endl;
pi res = upit(1, lo, hi, 0, ofs - 1);
if (res.first <= h[i]) sol = max(sol, h[i] - res.first);
if (h[i] <= res.second) sol = max(sol, res.second - h[i]);
}
cout << sol << endl;
}
int main () {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> h[i] >> a[i] >> b[i];
}
cin >> q;
if (n <= 2000) {
precompute();
for (int i = 0; i < q; i++) {
int lef, rig;
cin >> lef >> rig;
cout << res[lef][rig] << '\n';
}
} else if (q <= 1) {
cin >> q >> q;
while (ofs < n + 1) ofs *= 2;
for (int i = 0; i < 2 * ofs; i++) {
mn[i] = INF;
mx[i] = -INF;
}
sweep();
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
52220 KB |
Output is correct |
2 |
Correct |
28 ms |
52224 KB |
Output is correct |
3 |
Correct |
28 ms |
52224 KB |
Output is correct |
4 |
Correct |
29 ms |
52352 KB |
Output is correct |
5 |
Correct |
28 ms |
52216 KB |
Output is correct |
6 |
Correct |
28 ms |
52216 KB |
Output is correct |
7 |
Correct |
29 ms |
52216 KB |
Output is correct |
8 |
Correct |
28 ms |
52224 KB |
Output is correct |
9 |
Correct |
29 ms |
52472 KB |
Output is correct |
10 |
Correct |
28 ms |
52224 KB |
Output is correct |
11 |
Correct |
28 ms |
52216 KB |
Output is correct |
12 |
Correct |
28 ms |
52224 KB |
Output is correct |
13 |
Correct |
29 ms |
52216 KB |
Output is correct |
14 |
Correct |
28 ms |
52224 KB |
Output is correct |
15 |
Correct |
29 ms |
52216 KB |
Output is correct |
16 |
Correct |
28 ms |
52216 KB |
Output is correct |
17 |
Correct |
29 ms |
52216 KB |
Output is correct |
18 |
Correct |
28 ms |
52224 KB |
Output is correct |
19 |
Correct |
28 ms |
52216 KB |
Output is correct |
20 |
Correct |
28 ms |
52208 KB |
Output is correct |
21 |
Correct |
28 ms |
52216 KB |
Output is correct |
22 |
Correct |
28 ms |
52216 KB |
Output is correct |
23 |
Correct |
28 ms |
52224 KB |
Output is correct |
24 |
Correct |
28 ms |
52224 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
52220 KB |
Output is correct |
2 |
Correct |
28 ms |
52224 KB |
Output is correct |
3 |
Correct |
28 ms |
52224 KB |
Output is correct |
4 |
Correct |
29 ms |
52352 KB |
Output is correct |
5 |
Correct |
28 ms |
52216 KB |
Output is correct |
6 |
Correct |
28 ms |
52216 KB |
Output is correct |
7 |
Correct |
29 ms |
52216 KB |
Output is correct |
8 |
Correct |
28 ms |
52224 KB |
Output is correct |
9 |
Correct |
29 ms |
52472 KB |
Output is correct |
10 |
Correct |
28 ms |
52224 KB |
Output is correct |
11 |
Correct |
28 ms |
52216 KB |
Output is correct |
12 |
Correct |
28 ms |
52224 KB |
Output is correct |
13 |
Correct |
29 ms |
52216 KB |
Output is correct |
14 |
Correct |
28 ms |
52224 KB |
Output is correct |
15 |
Correct |
29 ms |
52216 KB |
Output is correct |
16 |
Correct |
28 ms |
52216 KB |
Output is correct |
17 |
Correct |
29 ms |
52216 KB |
Output is correct |
18 |
Correct |
28 ms |
52224 KB |
Output is correct |
19 |
Correct |
28 ms |
52216 KB |
Output is correct |
20 |
Correct |
28 ms |
52208 KB |
Output is correct |
21 |
Correct |
28 ms |
52216 KB |
Output is correct |
22 |
Correct |
28 ms |
52216 KB |
Output is correct |
23 |
Correct |
28 ms |
52224 KB |
Output is correct |
24 |
Correct |
28 ms |
52224 KB |
Output is correct |
25 |
Correct |
78 ms |
54648 KB |
Output is correct |
26 |
Correct |
73 ms |
52600 KB |
Output is correct |
27 |
Correct |
131 ms |
55800 KB |
Output is correct |
28 |
Correct |
145 ms |
55928 KB |
Output is correct |
29 |
Correct |
83 ms |
54648 KB |
Output is correct |
30 |
Correct |
119 ms |
54776 KB |
Output is correct |
31 |
Correct |
88 ms |
55288 KB |
Output is correct |
32 |
Correct |
148 ms |
55928 KB |
Output is correct |
33 |
Correct |
112 ms |
55672 KB |
Output is correct |
34 |
Correct |
104 ms |
54008 KB |
Output is correct |
35 |
Correct |
132 ms |
55800 KB |
Output is correct |
36 |
Correct |
146 ms |
55928 KB |
Output is correct |
37 |
Correct |
107 ms |
53880 KB |
Output is correct |
38 |
Correct |
136 ms |
54976 KB |
Output is correct |
39 |
Correct |
79 ms |
52728 KB |
Output is correct |
40 |
Correct |
138 ms |
54864 KB |
Output is correct |
41 |
Correct |
118 ms |
54264 KB |
Output is correct |
42 |
Correct |
139 ms |
54904 KB |
Output is correct |
43 |
Correct |
87 ms |
53112 KB |
Output is correct |
44 |
Correct |
140 ms |
54904 KB |
Output is correct |
45 |
Correct |
74 ms |
52728 KB |
Output is correct |
46 |
Correct |
136 ms |
54884 KB |
Output is correct |
47 |
Correct |
79 ms |
52984 KB |
Output is correct |
48 |
Correct |
136 ms |
54904 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
160 ms |
18040 KB |
Output is correct |
2 |
Correct |
187 ms |
23160 KB |
Output is correct |
3 |
Correct |
125 ms |
20088 KB |
Output is correct |
4 |
Correct |
189 ms |
23032 KB |
Output is correct |
5 |
Correct |
77 ms |
13560 KB |
Output is correct |
6 |
Correct |
182 ms |
23032 KB |
Output is correct |
7 |
Correct |
158 ms |
21752 KB |
Output is correct |
8 |
Correct |
183 ms |
23032 KB |
Output is correct |
9 |
Correct |
26 ms |
7672 KB |
Output is correct |
10 |
Correct |
182 ms |
23032 KB |
Output is correct |
11 |
Correct |
119 ms |
15320 KB |
Output is correct |
12 |
Correct |
200 ms |
23184 KB |
Output is correct |
13 |
Correct |
152 ms |
21068 KB |
Output is correct |
14 |
Correct |
159 ms |
20984 KB |
Output is correct |
15 |
Correct |
138 ms |
21112 KB |
Output is correct |
16 |
Correct |
151 ms |
21576 KB |
Output is correct |
17 |
Correct |
150 ms |
21332 KB |
Output is correct |
18 |
Correct |
141 ms |
21752 KB |
Output is correct |
19 |
Correct |
141 ms |
21100 KB |
Output is correct |
20 |
Correct |
153 ms |
21048 KB |
Output is correct |
21 |
Correct |
140 ms |
20852 KB |
Output is correct |
22 |
Correct |
145 ms |
21108 KB |
Output is correct |
23 |
Correct |
144 ms |
20984 KB |
Output is correct |
24 |
Correct |
141 ms |
21236 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
52220 KB |
Output is correct |
2 |
Correct |
28 ms |
52224 KB |
Output is correct |
3 |
Correct |
28 ms |
52224 KB |
Output is correct |
4 |
Correct |
29 ms |
52352 KB |
Output is correct |
5 |
Correct |
28 ms |
52216 KB |
Output is correct |
6 |
Correct |
28 ms |
52216 KB |
Output is correct |
7 |
Correct |
29 ms |
52216 KB |
Output is correct |
8 |
Correct |
28 ms |
52224 KB |
Output is correct |
9 |
Correct |
29 ms |
52472 KB |
Output is correct |
10 |
Correct |
28 ms |
52224 KB |
Output is correct |
11 |
Correct |
28 ms |
52216 KB |
Output is correct |
12 |
Correct |
28 ms |
52224 KB |
Output is correct |
13 |
Correct |
29 ms |
52216 KB |
Output is correct |
14 |
Correct |
28 ms |
52224 KB |
Output is correct |
15 |
Correct |
29 ms |
52216 KB |
Output is correct |
16 |
Correct |
28 ms |
52216 KB |
Output is correct |
17 |
Correct |
29 ms |
52216 KB |
Output is correct |
18 |
Correct |
28 ms |
52224 KB |
Output is correct |
19 |
Correct |
28 ms |
52216 KB |
Output is correct |
20 |
Correct |
28 ms |
52208 KB |
Output is correct |
21 |
Correct |
28 ms |
52216 KB |
Output is correct |
22 |
Correct |
28 ms |
52216 KB |
Output is correct |
23 |
Correct |
28 ms |
52224 KB |
Output is correct |
24 |
Correct |
28 ms |
52224 KB |
Output is correct |
25 |
Correct |
78 ms |
54648 KB |
Output is correct |
26 |
Correct |
73 ms |
52600 KB |
Output is correct |
27 |
Correct |
131 ms |
55800 KB |
Output is correct |
28 |
Correct |
145 ms |
55928 KB |
Output is correct |
29 |
Correct |
83 ms |
54648 KB |
Output is correct |
30 |
Correct |
119 ms |
54776 KB |
Output is correct |
31 |
Correct |
88 ms |
55288 KB |
Output is correct |
32 |
Correct |
148 ms |
55928 KB |
Output is correct |
33 |
Correct |
112 ms |
55672 KB |
Output is correct |
34 |
Correct |
104 ms |
54008 KB |
Output is correct |
35 |
Correct |
132 ms |
55800 KB |
Output is correct |
36 |
Correct |
146 ms |
55928 KB |
Output is correct |
37 |
Correct |
107 ms |
53880 KB |
Output is correct |
38 |
Correct |
136 ms |
54976 KB |
Output is correct |
39 |
Correct |
79 ms |
52728 KB |
Output is correct |
40 |
Correct |
138 ms |
54864 KB |
Output is correct |
41 |
Correct |
118 ms |
54264 KB |
Output is correct |
42 |
Correct |
139 ms |
54904 KB |
Output is correct |
43 |
Correct |
87 ms |
53112 KB |
Output is correct |
44 |
Correct |
140 ms |
54904 KB |
Output is correct |
45 |
Correct |
74 ms |
52728 KB |
Output is correct |
46 |
Correct |
136 ms |
54884 KB |
Output is correct |
47 |
Correct |
79 ms |
52984 KB |
Output is correct |
48 |
Correct |
136 ms |
54904 KB |
Output is correct |
49 |
Correct |
160 ms |
18040 KB |
Output is correct |
50 |
Correct |
187 ms |
23160 KB |
Output is correct |
51 |
Correct |
125 ms |
20088 KB |
Output is correct |
52 |
Correct |
189 ms |
23032 KB |
Output is correct |
53 |
Correct |
77 ms |
13560 KB |
Output is correct |
54 |
Correct |
182 ms |
23032 KB |
Output is correct |
55 |
Correct |
158 ms |
21752 KB |
Output is correct |
56 |
Correct |
183 ms |
23032 KB |
Output is correct |
57 |
Correct |
26 ms |
7672 KB |
Output is correct |
58 |
Correct |
182 ms |
23032 KB |
Output is correct |
59 |
Correct |
119 ms |
15320 KB |
Output is correct |
60 |
Correct |
200 ms |
23184 KB |
Output is correct |
61 |
Correct |
152 ms |
21068 KB |
Output is correct |
62 |
Correct |
159 ms |
20984 KB |
Output is correct |
63 |
Correct |
138 ms |
21112 KB |
Output is correct |
64 |
Correct |
151 ms |
21576 KB |
Output is correct |
65 |
Correct |
150 ms |
21332 KB |
Output is correct |
66 |
Correct |
141 ms |
21752 KB |
Output is correct |
67 |
Correct |
141 ms |
21100 KB |
Output is correct |
68 |
Correct |
153 ms |
21048 KB |
Output is correct |
69 |
Correct |
140 ms |
20852 KB |
Output is correct |
70 |
Correct |
145 ms |
21108 KB |
Output is correct |
71 |
Correct |
144 ms |
20984 KB |
Output is correct |
72 |
Correct |
141 ms |
21236 KB |
Output is correct |
73 |
Incorrect |
81 ms |
11392 KB |
Output isn't correct |
74 |
Halted |
0 ms |
0 KB |
- |