#include "bits/stdc++.h"
using namespace std;
using ll = long long;
const int MAXN = 1e5+5;
ll maxi[MAXN], pref[MAXN], prefgold[MAXN];
struct camps
{
ll x = 0, g = 0, d = 0;
} in[MAXN];
int main()
{
int n;
cin >> n;
in[0].x = in[0].g = in[0].d = 0;
ll curr = 0;
//mini[0] = 1e18;
pref[0] = 0;
prefgold[0] = 0;
for(int i = 1; i <= n; i++) {
cin >> in[i].x >> in[i].g >> in[i].d;
curr = in[i].d - (in[i].x - in[i-1].x);
// mini[i] = min(mini[i - 1], curr);
pref[i] = curr + pref[i - 1];
prefgold[i] = in[i].g + prefgold[i - 1];
}
maxi[n] = pref[n];
for(int i = n - 1; i >= 0; i--)
{
maxi[i] = maxi[i + 1];
maxi[i] = max(maxi[i+1], pref[i]);
}
// for(int i = 1; i <= n; i++)
//cout << maxi[i] << " ";
// cout << "\n";
//ll l = 1, r = 1e9;
ll ans = 0;
for(int beg = 1; beg <= n; beg++)
{
int l = beg, r = n;
while(l <= r)
{
int m = (l + r) / 2;
ll ch = maxi[m] - pref[beg];
if(ch + in[beg].d >= 0)
{
ans = max(ans, prefgold[m] - prefgold[beg - 1]);
l = m + 1;
} else
r = m - 1;
}
}
cout << ans << "\n";
}
