#include <bits/stdc++.h>
typedef long long ll;
#define f first
#define s second
#define pb push_back
#define ep emplace
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define uniquev(v) sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define mem(f,x) memset(f , x , sizeof(f))
#define sz(x) (int32_t)(x).size()
#define __lcm(a, b) (1ll * ((a) / __gcd((a), (b))) * (b))
#define mxx *max_element
#define mnn *min_element
#define cntbit(x) __builtin_popcountll(x)
using namespace std;
const int N = 2e5 + 10;
int h[N], a[N], b[N], ans[N];
vector <pair <int, int>> ask[N], event[N];
const int lim = 1e9 + 100;
struct node{
int mx = -1, val = lim, lz = -1;
} seg[N];
node add(node A, node B) {
node C;
C.mx = max(A.mx, B.mx);
C.val = min(A.val, B.val);
return C;
}
void push(int id) {
int t = seg[id].lz;
seg[id * 2].lz = t;
seg[id * 2 + 1].lz = t;
seg[id * 2].mx = max(seg[id * 2].mx, t - seg[id * 2].val);
seg[id * 2 + 1].mx = max(seg[id * 2 + 1].mx, t - seg[id * 2 + 1].val);
seg[id].lz = -1;
}
void point(int id, int l, int r, int p, int i) {
if (l > p || r < p)
return;
if (l == r) {
if (i) {
seg[id].val = h[p];
} else {
seg[id].val = 1e9;
}
return;
}
push(id);
int m = (l + r) / 2;
point(id * 2, l, m, p, i);
point(id * 2 + 1, m + 1, r, p, i);
seg[id] = add(seg[id * 2], seg[id * 2 + 1]);
}
void upd(int id, int l, int r, int u, int v, int val) {
if (l > v || r < u || u > v)
return;
if (l >= u && r <= v) {
seg[id].mx = max(seg[id].mx, val - seg[id].val);
seg[id].lz = val;
return;
}
int m = (l + r) / 2;
push(id);
upd(id * 2, l, m, u, v, val);
upd(id * 2 + 1, m + 1, r, u, v, val);
seg[id] = add(seg[id * 2], seg[id * 2 + 1]);
}
int get(int id, int l, int r, int u, int v) {
if (l > v || r < u || u > v)
return -1;
push(id);
if (l >= u && r <= v)
return seg[id].mx;
int m = (l + r) / 2;
return max(get(id * 2, l, m, u, v), get(id * 2 + 1, m + 1, r, u, v));
}
int n, q, l[N], r[N];
void solve() {
for (int i = 1; i <= n; i++) {
event[i + a[i]].pb({i, 1});
event[i + b[i] + 1].pb({i, 0});
}
for (int i = 1; i <= n; i++) {
ask[r[i]].pb({l[i], i});
}
for (int i = 1; i <= n; i++) {
for (auto x : event[i]) {
point(1, 1, n, x.f, x.s);
}
int x = max(i - b[i], 1), y = max(0, i - l[i]);
upd(1, 1, n, x, y, h[i]);
for (auto x : ask[i]) {
ans[x.s] = max(ans[x.s], get(1, 1, n, x.f, i));
}
}
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
mem(ans, -1);
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];
}
solve();
for (int i = 1; i <= n; i++) {
event[i].clear();
ask[i].clear();
}
for (int i = 1; i <= n * 4; i++) {
seg[i].lz = -1;
seg[i].mx = -1;
seg[i].val = lim;
}
reverse(h + 1, h + n + 1);
reverse(a + 1, a + 1 + n);
reverse(b + 1, b + 1 + n);
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 << ans[i] << '\n';
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
11100 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
11100 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
82 ms |
46572 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
11100 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
