#include<bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define fi first
#define se second
const int N = 2e5+5;
int n,q,h[N],a[N],b[N],ans[N];
pii lazy[4*N];
struct Node{
int mx,mn,mxval;
};
Node st[4*N];
Node merge(Node a, Node b){
Node c;
c.mx = max(a.mx,b.mx);
c.mn = min(a.mn,b.mn);
c.mxval = max(a.mxval,b.mxval);
return c;
}
void build(int id, int l, int r){
if(l == r){
st[id] = {(int)-1e9,(int)1e9,(int)-1e9};
return;
}
int mid = (l+r)/2;
build(2*id,l,mid);
build(2*id+1,mid+1,r);
st[id] = merge(st[2*id],st[2*id+1]);
}
void update(int id, int l, int r, int i, int val1, int val2){
if(l > i || r < i) return;
if(l == r){
st[id].mx = val1;
st[id].mn = val2;
return;
}
int mid = (l+r)/2;
update(2*id,l,mid,i,val1,val2);
update(2*id+1,mid+1,r,i,val1,val2);
st[id] = merge(st[2*id],st[2*id+1]);
}
void down(int id){
lazy[2*id].fi = max(lazy[2*id].fi,lazy[id].fi);
lazy[2*id+1].fi = max(lazy[2*id+1].fi,lazy[id].fi);
lazy[2*id].se = min(lazy[2*id].se,lazy[id].se);
lazy[2*id+1].se = min(lazy[2*id+1].se,lazy[id].se);
st[2*id].mxval = max({st[2*id].mxval,st[2*id].mx-lazy[id].se,lazy[id].fi-st[2*id].mn});
st[2*id+1].mxval = max({st[2*id+1].mxval,st[2*id+1].mx-lazy[id].se,lazy[id].fi-st[2*id+1].mn});
lazy[id] = {-1e9,1e9};
}
void update1(int id, int l, int r, int u, int v, int val){
if(l > v || r < u) return;
if(l >= u && r <= v){
lazy[id].fi = max(lazy[id].fi,val);
lazy[id].se = min(lazy[id].se,val);
st[id].mxval = max({st[id].mxval,st[id].mx-lazy[id].fi,lazy[id].se-st[id].mn});
return;
}
if(l != r) down(id);
int mid = (l+r)/2;
update1(2*id,l,mid,u,v,val);
update1(2*id+1,mid+1,r,u,v,val);
st[id] = merge(st[2*id],st[2*id+1]);
}
Node get(int id, int l, int r, int u, int v){
if(l > v || r < u) return {(int)-1e9,(int)1e9,(int)-1e9};
if(l != r) down(id);
if(l >= u && r <= v) return st[id];
int mid = (l+r)/2;
return merge(get(2*id,l,mid,u,v),get(2*id+1,mid+1,r,u,v));
}
vector<pii>events[N],query[N];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n;
for(int i = 1; i <= n; i++){
cin >> h[i] >> a[i] >> b[i];
if(i+a[i] <= n) events[i+a[i]].push_back({i,1});
if(i+b[i]+1 <= n) events[i+b[i]+1].push_back({i,-1});
}
build(1,1,n);
for(int i = 1; i <= 4*n; i++) lazy[i].se = 1e9;
cin >> q;
for(int i = 1; i <= q; i++){
int l,r;
cin >> l >> r;
query[r].push_back({l,i});
}
for(int i = 1; i <= n; i++){
for(auto v: events[i]){
if(v.se == 1) update(1,1,n,v.fi,h[v.fi],h[v.fi]);
else update(1,1,n,v.fi,-1e9,1e9);
}
int l = max((int)1,i-b[i]);
int r = i-a[i];
if(l <= r) update1(1,1,n,l,r,h[i]);
for(auto[l,id]: query[i]){
ans[id] = -1;
ans[id] = max(ans[id],get(1,1,n,l,i).mxval);
}
}
for(int i = 1; i <= q; i++) cout << ans[i] << "\n";
}
