#include "bits/stdc++.h"
using namespace std;
#define for_(i, s, e) for (int i = s; i < (int) e; i++)
#define for__(i, s, e) for (ll i = s; i < e; i++)
typedef long long ll;
typedef vector<int> vi;
typedef array<int, 2> ii;
#define endl '\n'
namespace speedy_io {
int read_nonneg() {
int c;
while ((c = getchar_unlocked()) < '0' || c > '9');
int v = c - '0';
while ((c = getchar_unlocked()) >= '0' && c <= '9') {
v = (v << 3) + (v << 1) + (c - '0');
}
return v;
}
const int max_ll_size = 20;
void put_nonneg(ll n) {
int i = max_ll_size;
char output_buffer[max_ll_size];
do {
output_buffer[--i] = (n % 10) + '0';
n /= 10;
} while (n);
do {
putchar_unlocked(output_buffer[i]);
} while (++i < max_ll_size);
}
}
using namespace speedy_io;
const ll INF = 1e15;
const int MXN = 2e5;
struct Node {
ll ans = -INF, mn = INF;
};
Node tree[4*MXN];
class SegmentTree {
public:
int n;
vector<ll> lazy;
void push(int &p, int &c1, int &c2) {
lazy[c1] = max(lazy[c1], lazy[p]);
lazy[c2] = max(lazy[c2], lazy[p]);
tree[c1].ans = max(tree[c1].ans, lazy[c1]-tree[c1].mn);
tree[c2].ans = max(tree[c2].ans, lazy[c2]-tree[c2].mn);
lazy[p] = -INF;
}
void updateMin(int i, ll val, int l, int r, int p) {
if (l > i or r < i) return;
if (l == r) {
lazy[p] = -INF;
tree[p].mn = val;
return;
}
int mid = (l + r) / 2;
int c1 = 2*p+1, c2 = 2*p+2;
if (lazy[p] != -INF) push(p, c1, c2);
updateMin(i, val, l, mid, c1); updateMin(i, val, mid+1, r, c2);
tree[p] = {max(tree[c1].ans, tree[c2].ans), min(tree[c1].mn, tree[c2].mn)};
}
void updateRangeMax(int i, int j, ll val, int l, int r, int p) {
if (r < i or l > j) return;
if (l >= i and r <= j) {
lazy[p] = max(lazy[p], val);
tree[p].ans = max(tree[p].ans, lazy[p]-tree[p].mn);
return;
}
int mid = (l + r) / 2;
int c1 = 2*p+1, c2 = 2*p+2;
if (lazy[p] != -INF) push(p, c1, c2);
updateRangeMax(i, j, val, l, mid, c1); updateRangeMax(i, j, val, mid+1, r, c2);
tree[p] = {max(tree[c1].ans, tree[c2].ans), min(tree[c1].mn, tree[c2].mn)};
}
ll ans(int i, int j, int l, int r, int p) {
if (l > j or r < i) return -INF;
if (l >= i and r <= j) return tree[p].ans;
int mid = (l + r) / 2;
int c1 = 2*p+1, c2 = 2*p+2;
if (lazy[p] != -INF) push(p, c1, c2);
return max(ans(i, j, l, mid, c1), ans(i, j, mid+1, r, c2));
}
SegmentTree(int N) {
n = N;
for_(i, 0, 4*N) tree[i] = {-INF, INF};
lazy.resize(4*n, -INF);
}
};
int n, q;
vector<array<int, 3>> nums; // {height, a, b}
vector<ii> qrs;
vector<ll> ans;
void solve() {
SegmentTree tree(n);
vector<vector<array<int, 2>>> qrLeft(n);
for_(i, 0, q) qrLeft[qrs[i][1]].push_back({qrs[i][0], i});
vector<vi> enter(n), bye(n);
for_(i, 0, n) {
if (i+nums[i][1] < n) enter[i+nums[i][1]].push_back(i);
if (i+nums[i][1] < n-1) bye[min(i+nums[i][2], n-1)].push_back(i);
}
for_(i, 0, n) {
for (auto &e: enter[i]) tree.updateMin(e, nums[e][0], 0, n-1, 0);
if (i-nums[i][1] >= 0) tree.updateRangeMax(max(i-nums[i][2], 0), i-nums[i][1], nums[i][0], 0, n-1, 0);
for (auto &l: qrLeft[i]) ans[l[1]] = max(ans[l[1]], tree.ans(l[0], i, 0, n-1, 0));
for (auto &e: bye[i]) tree.updateMin(e, INF, 0, n-1, 0);
}
}
int main() {
#ifdef mlocal
freopen("test.in", "r", stdin);
#endif
// ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n;
nums.resize(n);
for_(i, 0, n) for_(j, 0, 3) nums[i][j] = read_nonneg();
cin >> q;
qrs.resize(q); ans.resize(q, -1);
for_(i, 0, q) {
cin >> qrs[i][0] >> qrs[i][1];
qrs[i][0] -= 1; qrs[i][1] -= 1;
}
solve();
reverse(nums.begin(), nums.end());
for_(i, 0, q) {
qrs[i][0] = n-1-qrs[i][0];
qrs[i][1] = n-1-qrs[i][1];
swap(qrs[i][0], qrs[i][1]);
}
solve();
for (auto i: ans) {
put_nonneg(i);
cout << endl;
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
507 ms |
35636 KB |
Output is correct |
2 |
Correct |
565 ms |
39336 KB |
Output is correct |
3 |
Correct |
362 ms |
27796 KB |
Output is correct |
4 |
Correct |
567 ms |
39328 KB |
Output is correct |
5 |
Correct |
218 ms |
18284 KB |
Output is correct |
6 |
Correct |
565 ms |
39384 KB |
Output is correct |
7 |
Correct |
473 ms |
34280 KB |
Output is correct |
8 |
Correct |
571 ms |
39272 KB |
Output is correct |
9 |
Correct |
56 ms |
6508 KB |
Output is correct |
10 |
Correct |
567 ms |
39328 KB |
Output is correct |
11 |
Correct |
316 ms |
24884 KB |
Output is correct |
12 |
Correct |
573 ms |
39336 KB |
Output is correct |
13 |
Correct |
309 ms |
38268 KB |
Output is correct |
14 |
Correct |
294 ms |
38012 KB |
Output is correct |
15 |
Correct |
277 ms |
37144 KB |
Output is correct |
16 |
Correct |
263 ms |
37356 KB |
Output is correct |
17 |
Correct |
321 ms |
38552 KB |
Output is correct |
18 |
Correct |
299 ms |
37404 KB |
Output is correct |
19 |
Correct |
292 ms |
37568 KB |
Output is correct |
20 |
Correct |
293 ms |
37708 KB |
Output is correct |
21 |
Correct |
282 ms |
38308 KB |
Output is correct |
22 |
Correct |
295 ms |
37916 KB |
Output is correct |
23 |
Correct |
297 ms |
38280 KB |
Output is correct |
24 |
Correct |
251 ms |
36860 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |