#include <bits/stdc++.h>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;
int32_t main() {
ios_base::sync_with_stdio(false);
cout.tie(0); cin.tie(0);
int n;
cin >> n;
vector<array<int, 3> > v(n);
for(auto &[a, b, c] : v) cin >> a >> b >> c;
ll ans = 0;
for(int i=0; i<n; i++) {
ll sum = 0, eng = 0;
for(int j=i; j<n; j++) {
sum += v[j][1];
eng += v[j][2];
if(eng >= v[j][0] - v[i][0] + 1) ans = max(ans, sum);
}
}
cout << ans << '\n';
return 0;
}
