#include <bits/stdc++.h> using namespace std; #define ll long long #define ld long double #define FOR(i,l,r) for(int i = (l), _r = (r); i <= _r; i++) #define FORNG(i,r,l) for(int i = (r), _l = (l); i >= _l; i--) #define REP(i,r) for(int i = 0, _r = (r); i < _r; i++) #define endl '\n' #define fi first #define se second #define pb push_back #define size(v) ((ll)(v).size()) #define all(v) (v).begin(),(v).end() #define MASK(x) (1LL << (x)) #define BIT(x,i) (((x) >> (i)) & 1) const ll MOD = 1e9 + 7, N = 2e5 + 36, LOG = 18; const int INF = 1e9 + 36; struct SegmentTree{ int n; vector<int> maxH,minH,maxC,minlz,maxlz; SegmentTree(int n = 0):n(n){ maxH.assign(n * 4 + 1, -INF); minH.assign(n * 4 + 1, INF); maxC.assign(n * 4 + 1, -INF); minlz.assign(n * 4 + 1, -1); maxlz.assign(n * 4 + 1, -1); } void apply(int c,int val){ maxC[c] = max(maxC[c], maxH[c] - val); maxC[c] = max(maxC[c], val - minH[c]); maxH[c] = max(maxH[c], val); minH[c] = min(minH[c], val); if(maxlz[c] == -1)maxlz[c] = val; if(minlz[c] == -1)minlz[c] = val; maxlz[c] = max(maxlz[c], val); minlz[c] = min(minlz[c], val); } void pushDown(int c,int l,int r){ if(maxlz[c] == -1)return; apply(l, maxlz[c]); apply(r, maxlz[c]); apply(l, minlz[c]); apply(r, minlz[c]); maxlz[c] = -1; minlz[c] = -1; } void merge(int c,int l,int r){ maxC[c] = max(maxC[l], maxC[r]); maxH[c] = max(maxH[l], maxH[r]); minH[c] = min(minH[l], minH[r]); } void setValue(int p,int val,int id,int l,int r){ //val == -1 -> del if(r < p || p < l)return; if(l == r){ if(val == -1){ maxH[id] = -INF; minH[id] = INF; }else maxH[id] = minH[id] = val; return; } int mid = (l + r) >> 1; pushDown(id, id * 2, id * 2 + 1); setValue(p, val, id * 2, l, mid); setValue(p, val, id * 2 + 1, mid + 1, r); merge(id, id * 2, id * 2 + 1); } void update(int u,int v,int val,int id,int l,int r){ if(r < u || v < l)return; if(u <= l && r <= v){ apply(id, val); return; } int mid = (l + r) >> 1; pushDown(id, id * 2, id * 2 + 1); update(u, v, val, id * 2, l, mid); update(u, v, val, id * 2 + 1, mid + 1, r); merge(id, id * 2, id * 2 + 1); } int getMaxC(int u,int v,int id,int l,int r){ if(v < l || r < u)return -INF; if(u <= l && r <= v)return maxC[id]; int mid = (l + r) >> 1; pushDown(id, id * 2, id * 2 + 1); return max(getMaxC(u, v, id * 2, l, mid), getMaxC(u, v, id * 2 + 1, mid + 1, r)); } void printTree(int id,int l,int r){ cout<<'['<<l<<' '<<r<<"] : "<<maxH[id]<<' '<<minH[id]<<' '<<maxC[id]<<endl; if(l == r)return; int mid = (l + r) >> 1; pushDown(id, id * 2, id * 2 + 1); printTree(id * 2, l, mid); printTree(id * 2 + 1, mid + 1, r); } void setValue(int p,int val){setValue(p, val, 1, 1, n);} void update(int u,int v,int val){update(u, v, val, 1, 1, n);} int getMaxC(int u,int v){return getMaxC(u, v, 1, 1, n);} }S; int n,q,h[N],a[N],b[N],ans[N]; pair<int,int> Q[N]; vector<int> event[N]; vector<pair<int,int>> ask[N]; void addEvent(int pos,int id,bool open){ if(pos > n)return; if(open)event[pos].pb(id); else event[pos].pb(-id); } int main(){ //freopen(".INP", "r", stdin); //freopen(".OUT", "w", stdout); ios_base::sync_with_stdio(0);cin.tie(0); cin>>n; S = SegmentTree(n); FOR(i,1,n)cin>>h[i]>>a[i]>>b[i]; cin>>q; FOR(i,1,q){ cin>>Q[i].fi>>Q[i].se; ask[Q[i].se].pb({Q[i].fi, i}); ans[i] = -1; } FOR(i,1,n){ REP(j, size(event[i])){ int v = event[i][j]; if(v > 0)S.setValue(v, h[v]); else S.setValue(-v, -1); } S.update(i - b[i], i - a[i], h[i]); REP(j, size(ask[i])){ int l = ask[i][j].fi, idx = ask[i][j].se; ans[idx] = max(ans[idx], S.getMaxC(l, i)); } addEvent(i + a[i], i, 1); addEvent(i + b[i] + 1, i, 0); } FOR(i,1,q)cout<<ans[i]<<endl; }