#include "bits/stdc++.h"
using namespace std;
using ll=long long;
#define S second
#define F first
int main(){
cin.tie(0)->sync_with_stdio(0);
int n;
cin>>n;
vector<array<int,3>>a(n);
for(auto&i:a)cin>>i[0]>>i[1]>>i[2];
sort(a.begin(),a.end());
ll pg[n],pe[n];
pg[0]=a[0][1];
pe[0]=a[0][2];
for(int i=1;i<n;i++){
pg[i]=pg[i-1]+a[i][1];
pe[i]=pe[i-1]+a[i][2];
}
ll res=1;
for(int i=0;i<n;i++){
for(int j=i;j<n;j++){
if(pe[j]-(i?pe[i-1]:0)>=a[j][0]-a[i][0])res=max(res,pg[j]-(i?pg[i-1]:0));
}
}
cout<<res;
}
