#include<iostream>
#include<vector>
#include<algorithm>
#define pb push_back
using namespace std;
template <typename T> inline void Cin(T &x)
{
register char c;
for (c = getchar(); c < '0' || c > '9'; c = getchar());
for (x = 0; c >= '0' && c <= '9'; c = getchar())
x = x * 10 + c - '0';
}
long long res;
int n, Maxv;
vector<long long> v, g, r;
vector<int> t, x;
inline void Update(int x, const int& val)
{
while(x < Maxv)
{
t[x] = min(t[x], val);
x += (x & -x);
}
}
inline int Query(int x)
{
int res = Maxv;
while(x > 0)
{
res = min(res, t[x]);
x -= (x & -x);
}
return res;
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
Cin(n);
Maxv = n + 3;
t.resize(Maxv, Maxv);
x.resize(n + 1), g.resize(n + 1), r.resize(n + 1);
g[0] = r[0] = x[0] = 0;
for(int i = 1; i <= n; ++i)
{
Cin(x[i]), Cin(g[i]), Cin(r[i]);
res = max(res, g[i]);
g[i] += g[i - 1], r[i] += r[i - 1];
v.pb(r[i - 1] - x[i]);
}
sort(v.begin(), v.end());
v.erase(unique(v.begin(), v.end()), v.end());
v.pb(v.back() + 1);
for(int i = 1; i <= n; ++i)
{
int j = Query(upper_bound(v.begin(), v.end(), r[i] - x[i]) - v.begin());
if(j < Maxv) res = max(res, g[i] - g[j - 1]);
Update(lower_bound(v.begin(), v.end(), r[i - 1] - x[i]) - v.begin() + 1, i);
}
cout << res;
}
