#include <bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define vll vector<ll>
#define vii vector<pair<int, int>>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define loop(_) for (int __ = 0; __ < (_); ++__)
#define pb push_back
#define f first
#define s second
#define sz(_) ((int)_.size())
#define all(_) _.begin(), _.end()
#define lb lower_bound
#define ub upper_bound
using ll = long long;
using ld = long double;
const int N = 1e5 + 7;
const ll mod = 1e9 + 7;
int n;
int g[N] , e[N] ;
int x[N] ;
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
#ifndef ONLINE_JUDGE
#endif
cin >> n;
for(int i = 0 ;i < n;++ i){
cin >> x[i] >> g[i] >> e[i] ;
}
ll ans = 0 ;
int j = 0 ;
ll sum = 0 ;
ll gol = 0 ;
for(int i = 0 ;i < n ;++ i){
sum += e[i] ;
gol += g[i] ;
while(sum < x[i] - x[j]){
gol-= g[j] ;
sum -= e[j ++] ;
}
ans = max(ans , gol) ;
}
cout << ans ;
return 0;
}
