#include <bits/stdc++.h>
using namespace std;
const int nx=2e5+5;
int n, h[nx], a[nx], b[nx], ans=-1;
vector<int> add[nx], rem[nx];
struct segtree
{
int d[4*nx], t;
void build(int l, int r, int i)
{
d[i]=t?-2e9:2e9;
if (l==r) return;
int md=(l+r)/2;
build(l, md, 2*i);
build(md+1, r, 2*i+1);
}
void update(int l, int r, int i, int idx, int vl)
{
if (r<idx||idx<l) return;
if (l==r) return void(d[i]=vl);
int md=(l+r)/2;
update(l, md, 2*i, idx, vl);
update(md+1, r, 2*i+1, idx, vl);
if (t) d[i]=max(d[2*i], d[2*i+1]);
else d[i]=min(d[2*i], d[2*i+1]);
}
int query(int l, int r, int i, int ql, int qr)
{
if (qr<l||r<ql) return t?-2e9:2e9;
if (ql<=l&&r<=qr) return d[i];
int md=(l+r)/2;
if (t) return max(query(l, md, 2*i, ql, qr), query(md+1, r, 2*i+1, ql, qr));
else return min(query(l, md, 2*i, ql, qr), query(md+1, r, 2*i+1, ql, qr));
}
} mx, mn;
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n;
mx.t=1;
mx.build(1, n, 1);
mn.build(1, n, 1);
for (int i=1; i<=n; i++) cin>>h[i]>>a[i]>>b[i], add[min(nx-1, i+a[i])].push_back(i), rem[min(nx-1, i+b[i])].push_back(i);
for (int i=1; i<=n; i++)
{
for (auto x:add[i]) mx.update(1, n, 1, x, h[x]), mn.update(1, n, 1, x, h[x]);
if (i-a[i]>=1)
{
ans=max({ans, mx.query(1, n, 1, max(1, i-b[i]), i-a[i])-h[i], -mn.query(1, n, 1, max(1, i-b[i]), i-a[i])+h[i]});
//cout<<i<<' '<<i-b[i]<<' '<<i-a[i]<<' '<<mx.query(1, n, 1, max(1, i-b[i]), i-a[i])<<' '<<mn.query(1, n, 1, max(1, i-b[i]), i-a[i])<<'\n';
}
for (auto x:rem[i]) mx.update(1, n, 1, x, -2e9), mn.update(1, n, 1, x, 2e9);
}
cin>>n>>n>>n;
cout<<ans;
}
/*
5
10 2 4
1 1 1
2 1 3
1 1 1
100 1 1
1
1 5
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
4 ms |
14684 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
4 ms |
14684 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
160 ms |
26568 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
4 ms |
14684 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |