# include <bits/stdc++.h>
# define speed ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
// # define int long long
# define fi first
# define se second
using namespace std;
const int N = 1e5 + 7;
const int mod = 1e9 + 7;
// const int INF = 1e18;
int x[N], g[N], d[N];
int32_t main() {
speed;
int n;
cin >> n;
for ( int i = 1; i <= n; i++ ) {
cin >> x[i] >> g[i] >> d[i];
d[i] += d[i - 1];
}
int mx = 0;
for ( int i = 1; i <= n; i++ ) {
int sum = 0;
for ( int j = i; j <= n; j++ ) {
sum += g[j];
if ( d[j] - d[i - 1] >= x[j] - x[i] ) {
mx = max( mx, sum );
}
}
}
cout << mx;
}
