#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define co cout<<
// stuff
struct smth{
ll last,ans,extra;
};
void solve(){
ll n;
cin>>n;
smth ans[n+5];
ll cords[n+5];
ll mx=0;
for(int i=0;i<n;i++){
cin>>cords[i]>>ans[i].ans>>ans[i].extra;
ll sum=0,sum1=0;
for(int j=i;j>=0;j--){
sum+=ans[j].ans;
sum1+=ans[j].extra;
// co i<<' '<<j<<' '<<sum<<' '<<sum1<<'\n';
if(sum1>=cords[i]-cords[j]) mx=max(mx,sum);
}
continue;
ans[i].last=i;
while(ans[i].last!=0){
if(cords[ans[i].last]-cords[ans[i].last-1]<=ans[i].extra+ans[ans[i].last-1].extra){
ans[i].extra-=cords[ans[i].last]-cords[ans[i].last-1];
ans[i].ans+=ans[ans[i].last-1].ans;
ans[i].extra+=ans[ans[i].last-1].extra;
ans[i].last=ans[ans[i].last-1].last;
}
else break;
}
}
co mx;
}
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int _=1;
// cin>>_;
while(_--) solve();
}
