#include <bits/stdc++.h>
using namespace std;
long long mn,n,m,pt,ans;
pair<long long,long long> f[100005];
long long d[100005],a[100005],e[100005],ps[100005],ttl[100005];
long long l,r,mid;
int main(){
ios::sync_with_stdio(false);
cin >> n;
for (int i=1;i<=n;i++){
cin >> d[i] >> a[i] >> e[i];
ps[i]=ps[i-1]+e[i];
ttl[i]=ttl[i-1]+a[i];
}
mn=1e18;
for (int i=n;i>=1;i--){
if (d[i]-ps[i] < mn){
mn=d[i]-ps[i];
pt++; f[pt]=make_pair(d[i]-ps[i],i);
}
l=1; r=pt;
while (l < r){
mid=(l+r)/2;
if (f[mid].first <= d[i]-ps[i-1])
r=mid;
else
l=mid+1;
}
ans=max(ans,ttl[f[l].second]-ttl[i-1]);
}
cout << ans << "\n";
return 0;
}
