/*
* Created: 2022-07-06 11:21
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
using namespace chrono;
// using namespace atcoder
template <typename T>
using ordered_set =
tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long ll;
typedef long double ld;
const ll inf = 1e18;
#define pii pair<int,int>
#define pll pair<ll,ll>
#define vi vector<int>
#define vll vector<ll>
#define rep(i, a, b) for(int i = (a);i<(b);i++)
#define repn(i, a, b) for(int i = (a);i>=(b);i--)
#define ss second
#define ff first
#define mkp make_pair
#define pb push_back
#define all(x) (x).begin(), (x).end()
const int N = 100010;
long long g[N];
long long d[N];
long long x[N];
long long dv(int l, int r) {
if(l == r) {
return g[l];
}
ll ans2 = 0;
int mid = (l+r)/2;
map<ll, ll> mp;
int prev = x[mid+1];
long long sumg=0;
long long sum=0;
for(int i = mid+1;i<=r;i++) {
sum+=d[i];
sumg+=g[i];
mp[sum-(x[i]-prev)]=sumg+1;
}
for(auto i = mp.rbegin();i!=mp.rend();++i) {
// cout << l << " " << r << " " << (*i).first << " " << (*i).second << "\n";
auto it = i;
++it;
if(it!=mp.rend()) {
(*it).second=max((*i).second, (*it).second);
}
}
long long ans = 0;
sumg=0;
sum=0;
prev=x[mid+1];
for(int i = mid;i>=l;i--) {
sum+=d[i];
sumg+=g[i];
if(!mp[-sum+(prev-x[i])])continue;
auto it = mp.lower_bound(-sum+(prev-x[i]));
if(it==mp.end())continue;
ans=max(ans, sumg+(*it).second-1);
}
ans2=max(ans2, max(dv(l, mid), dv(mid+1, r)));
return max(ans2, ans);
}
void solve() {
int n;
cin >> n;
for(int i = 0;i<n;i++) {
cin >> x[i] >> g[i] >> d[i];
}
cout << dv(0, n-1) << "\n";
}
int main () {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t = 1;
while(t--) {
solve();
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
