#include <bits/stdc++.h>
// #pragma optimize ("g",on)
// #pragma GCC optimize ("inline")
// #pragma GCC optimize ("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC optimize ("03")
// #pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
// #pragma comment(linker, "/stack:200000000")
// #define int long long
using namespace std;
const int N = 1e5 + 7;
int n;
pair<int, pair<int, int> > a[N];
signed main() {
// freopen("bank.in", "r", stdin);
// freopen("bank.out", "w", stdout);
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
cin>>n;
for(int i = 1; i <= n; i++) {
int pos, d, x;
cin>>pos>>d>>x;
a[i].first = pos, a[i].second.first = d, a[i].second.second = x;
}
sort(a + 1, a + 1 + n);
int ans = 0;
for(int i = 1; i <= n; i++) {
int sum_d = 0, sum_x = 0;
for(int j = i; j <= n; j++) {
sum_x += a[j].second.second, sum_d += a[j].second.first;
int len = a[j].first - a[i].first;
if(len <= sum_x) {
// cout << i << ' ' << j << ' ' << len << ' ' << sum_x << '\n';
ans = max(ans, sum_d);
}
}
}
cout << ans << '\n';
}
