#include <bits/stdc++.h>
#define int long long
int n;
int cord[100010];
int gold[100010];
int energy[100010];
int prefGold[100010];
int prefEnergy[100010];
int best[100010];
signed main(){
std::ios::sync_with_stdio(false);
std::cin.tie(0);
std::cin >> n;
for(int i=1;i<=n;i++){
std::cin >> cord[i] >> gold[i] >> energy[i];
prefGold[i]=prefGold[i-1]+gold[i];
prefEnergy[i]=prefEnergy[i-1]+energy[i];
}
for(int i=1;i<=n;i++){
best[i]=prefEnergy[i]-cord[i];
}
for(int i=n-1;i>=1;i--){
best[i]=std::max(best[i],best[i+1]);
}
int ans=0;
for(int i=1;i<=n;i++){
int need=prefEnergy[i-1]-cord[i];
int l=i,r=n;
while(l<r){
int m=(l+r+1)/2;
if(best[m]>=need)l=m;
else r=m-1;
}
if(best[l]>=need){
ans=std::max(ans,prefGold[l]-prefGold[i-1]);
}
}
std::cout << ans << '\n';
}
