#include "bits/stdc++.h"
using namespace std;
#ifdef Nero
#include "Deb.h"
#else
#define deb(...)
#endif
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
vector<int> x(n + 1), g(n + 1), d(n + 1);
for (int i = 1; i <= n; ++i) {
cin >> x[i] >> g[i] >> d[i];
}
vector<long long> pg(n + 1);
for (int i = 1; i <= n; ++i) {
pg[i] = pg[i - 1] + g[i];
}
vector<long long> ps(n + 1);
for (int i = 1; i <= n; ++i) {
ps[i] = ps[i - 1] + d[i];
}
vector<long long> suf(n + 1);
suf[n] = x[n] - ps[n];
for (int i = n - 1; i > 0; --i) {
suf[i] = min(suf[i + 1], x[i] - ps[i]);
}
long long ans = 0;
for (int i = 1; i <= n; ++i) {
long long key = x[i] - ps[i - 1];
int l = i, r = n;
while (l < r) {
int mid = (l + r + 1) >> 1;
if (suf[mid] <= key) {
l = mid;
} else {
r = mid - 1;
}
}
ans = max(ans, pg[l] - pg[i - 1]);
}
cout << ans << '\n';
return 0;
}
