#include <iostream>
#include <vector>
#include <numeric>
#include <cmath>
#include <set>
#include <array>
#include <algorithm>
using namespace std;
using ll = long long;
const ll INF = 1e15;
struct segtree
{
int n;
vector<ll> mx, mod, tree;
void push(int v)
{
if (mod[v] != 0)
{
mod[v << 1] = max(mod[v << 1], mod[v]);
mod[v << 1 | 1] = max(mod[v << 1 | 1], mod[v]);
tree[v << 1] = max(tree[v << 1], mx[v << 1] + mod[v]);
tree[v << 1 | 1] = max(tree[v << 1 | 1], mx[v << 1 | 1] + mod[v]);
mod[v] = 0;
}
}
segtree(int n) : n(n)
{
mx.resize(4 * n, -INF);
mod.resize(4 * n, 0);
tree.resize(4 * n, -INF);
}
ll get(int a, int b, int l, int r, int v)
{
if (a > r || b < l) return -INF;
if (a == l && b == r) return tree[v];
int m = (l + r) >> 1;
push(v);
return max(get(a, min(b, m), l, m, v << 1), get(max(a, m + 1), b, m + 1, r, v << 1 | 1));
}
ll get(int a, int b)
{
return get(a, b, 0, n - 1, 1);
}
void updateH(int p, ll val, int l, int r, int v)
{
if (l > r) return;
if (l == r)
{
mx[v] = val;
tree[v] = val;
return;
}
int m = (l + r) >> 1;
push(v);
if (p <= m) updateH(p, val, l, m, v << 1);
else updateH(p, val, m + 1, r, v << 1 | 1);
tree[v] = max(tree[v << 1], tree[v << 1 | 1]);
mx[v] = max(mx[v << 1], mx[v << 1 | 1]);
}
void updateH(int p, ll val)
{
updateH(p, val, 0, n - 1, 1);
}
void updateM(int a, int b, ll val, int l, int r, int v)
{
if (a > r || b < l) return;
if (a == l && b == r)
{
mod[v] = max(mod[v], val);
tree[v] = max(tree[v], mx[v] + mod[v]);
return;
}
int m = (l + r) >> 1;
push(v);
updateM(a, min(b, m), val, l, m, v << 1);
updateM(max(a, m + 1), b, val, m + 1, r, v << 1 | 1);
tree[v] = max(tree[v << 1], tree[v << 1 | 1]);
mx[v] = max(mx[v << 1], mx[v << 1 | 1]);
}
void updateM(int a, int b, ll val)
{
updateM(a, b, val, 0, n - 1, 1);
}
};
int main()
{
cin.tie(0)->sync_with_stdio(0);
int n;
cin >> n;
vector<pair<int, int>> ab(n);
vector<ll> h(n);
for (int i = 0; i < n; ++i) cin >> h[i] >> ab[i].first >> ab[i].second;
int q;
cin >> q;
vector<pair<int, int>> queries(q);
for (auto &[l, r] : queries)
{
cin >> l >> r;
--l;
--r;
}
vector<int> inds(q);
vector<pair<pair<int, int>, int>> events;
segtree st(n);
events.reserve(2 * n);
iota(inds.begin(), inds.end(), 0);
sort(inds.begin(), inds.end(), [&queries](int a, int b){ return queries[a].second < queries[b].second; });
for (int i = 0; i < n; ++i)
{
events.emplace_back(pair(i + ab[i].first, 0), i);
events.emplace_back(pair(i + ab[i].second, 1), i);
}
sort(events.begin(), events.end());
vector<ll> result(q, -1);
for (int i = 0, indE = 0, indQ = 0; i < n; ++i)
{
while (indE < 2 * n && events[indE].first <= pair(i, 0))
{
st.updateH(events[indE].second, -h[events[indE].second]);
++indE;
}
if (i - ab[i].first >= 0) st.updateM(max(0, i - ab[i].second), i - ab[i].first, h[i]);
while (indQ < q && queries[inds[indQ]].second == i)
{
result[inds[indQ]] = max(result[inds[indQ]], st.get(queries[inds[indQ]].first, queries[inds[indQ]].second));
++indQ;
}
while (indE < 2 * n && events[indE].first <= pair(i, 1))
{
st.updateH(events[indE].second, -INF);
++indE;
}
}
reverse(h.begin(), h.end());
reverse(ab.begin(), ab.end());
for (auto &i : queries) i = {n - i.second - 1, n - i.first - 1};
events.clear();
sort(inds.begin(), inds.end(), [&queries](int a, int b){ return queries[a].second < queries[b].second; });
for (int i = 0; i < n; ++i)
{
events.emplace_back(pair(i + ab[i].first, 0), i);
events.emplace_back(pair(i + ab[i].second, 1), i);
}
sort(events.begin(), events.end());
st = segtree(n);
for (int i = 0, indE = 0, indQ = 0; i < n; ++i)
{
while (indE < 2 * n && events[indE].first <= pair(i, 0))
{
st.updateH(events[indE].second, -h[events[indE].second]);
++indE;
}
if (i - ab[i].first >= 0) st.updateM(max(0, i - ab[i].second), i - ab[i].first, h[i]);
while (indQ < q && queries[inds[indQ]].second == i)
{
result[inds[indQ]] = max(result[inds[indQ]], st.get(queries[inds[indQ]].first, queries[inds[indQ]].second));
++indQ;
}
while (indE < 2 * n && events[indE].first <= pair(i, 1))
{
st.updateH(events[indE].second, -INF);
++indE;
}
}
for (ll i : result) cout << i << '\n';
return 0;
}
/*
5
10 2 4
1 1 1
2 1 3
1 1
1
100 1 1
5
1 2
2 3
1 3
1 4
1 5
*/
/*
2
10 2 4
1 1 1
1
1 2
*/
//10 1 2 1 100
/*
3
6 1 1
8 1 1
2 2 2
1
1 3
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
400 ms |
41016 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
