#include<bits/stdc++.h>
#define IOS ios_base::sync_with_stdio(false);cin.tie();cout.tie();
#define all(x) x.begin(), x.end()
#define int long long
#define pq priority_queue
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define pp pop_back
#define F first
#define S second
using namespace std;
int G[100001];
int E[100001];
int A[100001];
int n, ans = 0;
void calc(int L, int R) {
vector<pair<int, int>> l, r;
l.clear();
r.clear();
int M = (L + R) / 2;
int d = A[M+1] - A[M];
int e = 0, g = 0;
for (int i = M; i >= L; i--) {
e += E[i]; g += G[i];
l.pb({g, e - (A[M] - A[i])});
}
for (int i = l.size()-2; i > 0; i--) if (l[i].S < l[i-1].S) l[i] = l[i-1];
e = 0; g = 0;
for (int i = M + 1; i <= R; i++) {
e += E[i]; g += G[i];
r.pb({g, e - (A[i] - A[M + 1])});
}
for (int i = r.size()-2; i > 0; i--) if (r[i].S < r[i-1].S) r[i] = r[i-1];
L = l.size()-1, R = 0;
while (L && R < r.size()) {
while (L && l[L].S + r[R].S - d < 0) L--;
if (L) ans = max(ans, r[R].F + l[L].F);
R++;
}
}
void find(int L, int R) {
if (L == R) {
ans = max(ans, G[L]);
return ;
}
int M = (L + R) / 2;
find(L, M);
find(M + 1, R);
calc(L, R);
}
void solve () {
cin >> n;
for (int i = 0; i < n; i++) {
cin >> A[i] >> G[i] >> E[i];
}
find(0, n-1);
cout << ans;
}
signed main() {IOS solve(); return 0;}
