#include <bits/stdc++.h>
using namespace std;
int main(){
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
int n;
cin>>n;
long long arr[n+1][3];
for(int i = 1;i<=n;i++){
long long x,g,en;
cin>>x>>g>>en;
arr[i][0] = x, arr[i][1] = g,arr[i][2] = en;
}
vector<pair<long long,long long>> v;
long long dist = 0 , energy = 0 , gold = 0;
for(int i = 1;i<=n;i++){
if(i>1)dist+=arr[i][0]-arr[i-1][0];
v.push_back({energy-dist,gold});
energy+=arr[i][2];
gold+=arr[i][1];
}
long long tab[n];
sort(v.begin(),v.end());
long long mi = 1e18;
for(int i = 0;i<n;i++){
mi = min(mi,v[i].second);
tab[i] = mi;
}
long long ma = 0;
dist = 0 , energy = 0 , gold = 0;
for(int i = 1;i<=n;i++){
energy+=arr[i][2];
gold+=arr[i][1];
if(i>1)dist+=arr[i][0]-arr[i-1][0];
if(energy-dist>=0){
ma = max(ma,gold);
}else{
pair<long long,long long>p = {(energy-dist)+1,-1};
int it = lower_bound(v.begin(),v.end(),p)-v.begin();
it--;
if(it>=0){
ma = max(ma,gold-tab[it]);
}
}
}
cout<<ma;
}
