#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << ' ' <<
#define nl << '\n'
signed main(){
cin.tie(0)->sync_with_stdio(0);
int n, ans = 0; cin >> n;
vector<int> a(n+1), b(n+1), c(n+1), d(n+1);
for(int i=1; i<=n; ++i){
cin >> c[i] >> b[i] >> a[i];
ans = max(ans, b[i]);
a[i] += a[i-1];
b[i] += b[i-1];
}
for(int i=0; i<n; ++i) a[i] -= c[i+1];
for(int i=0; i<=n; ++i) d[i] = a[i];
for(int i=1; i<=n; ++i) d[i] = min(d[i], d[i-1]);
for(int i=1; i<=n; ++i){
int sub = (i < n ? c[i+1] : 0LL);
int low = 0, high = i;
while(low<high){
int mid = (low+high)/2;
if(d[mid] <= a[i] + sub - c[i]) high = mid;
else low = mid+1;
}
ans = max(ans, b[i] - b[low]);
}
cout << ans;
}
