#include <bits/stdc++.h>
using namespace std;
#define form(mt) for(auto vec:mt){for (auto el:vec){cout << el << " ";} cout << "\n";}
#define forv(vec) for (auto el:vec){cout <<el.second << " ";}
struct camp{
int x, g, e;
};
signed main() {
long long n, maxx = 0;
cin >> n;
vector<camp> vec(n);
for (int i = 0; i< n; i++) cin >> vec[i].x >> vec[i].g >> vec[i].e;
for (int i = 0; i<n; i++){
long long esum=0,gsum=0,xsum=0, lastx = 0;
int k = i;
do{
esum += vec[k].e;
xsum += (vec[k].x-lastx);
gsum += vec[k].g;
lastx = vec[k].x;
k++;
}while(esum >= xsum && k<=n-1);
maxx = max(gsum, maxx);
}
cout << maxx;
return 0;
}
