This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
const int maxn=200000+10;
int n,q;
int h[maxn],a[maxn],b[maxn];
int kaf=(1<<19),inf=1e9+5;
vector<int>del[maxn],ins[maxn];
vector<pair<int,int>>allq[maxn];
int res[maxn];
struct segment{
struct node{
int r,mxq,mnq,mx,mn;
node(){
r=-1;
mxq=mx=-inf;
mn=mnq=inf;
}
};
void calr(int i){
seg[i].r=max(seg[i].r,seg[i].mxq-seg[i].mn);
seg[i].r=max(seg[i].r,seg[i].mx-seg[i].mnq);
}
void calc(int i){
calr(i);
if(i>=kaf){
return ;
}
seg[i].r=max(seg[i].r,max(seg[(i<<1)].r,seg[(i<<1)^1].r));
seg[i].mx=max(seg[(i<<1)].mx,seg[(i<<1)^1].mx);
seg[i].mn=min(seg[(i<<1)].mn,seg[(i<<1)^1].mn);
}
void shift(int i){
if(i>=kaf){
return ;
}
seg[(i<<1)].mxq=max(seg[(i<<1)].mxq,seg[i].mxq);
seg[(i<<1)].mnq=min(seg[(i<<1)].mnq,seg[i].mnq);
seg[(i<<1)^1].mxq=max(seg[(i<<1)^1].mxq,seg[i].mxq);
seg[(i<<1)^1].mnq=min(seg[(i<<1)^1].mnq,seg[i].mnq);
seg[i].mxq=-inf;
seg[i].mnq=inf;
}
node seg[(1<<20)];
void upd(int i,int l,int r,int tl,int tr,int mx,int mn){
calr(i);
if(l>r||l>tr||r<tl||tl>tr){
return ;
}
if(l>=tl&&r<=tr){
calr(i);
seg[i].mxq=-inf;
seg[i].mnq=inf;
seg[i].mx=mx;
seg[i].mn=mn;
return ;
}
shift(i);
int m=(l+r)>>1;
upd((i<<1),l,m,tl,tr,mx,mn);
upd((i<<1)^1,m+1,r,tl,tr,mx,mn);
calc(i);
return ;
}
void qu(int i,int l,int r,int tl,int tr,int w){
calr(i);
if(l>r||l>tr||r<tl||tl>tr){
return ;
}
if(l>=tl&&r<=tr){
seg[i].mnq=min(seg[i].mnq,w);
seg[i].mxq=max(seg[i].mxq,w);
calr(i);
return ;
}
int m=(l+r)>>1;
qu((i<<1),l,m,tl,tr,w);
qu((i<<1)^1,m+1,r,tl,tr,w);
calc(i);
}
int pors(int i,int l,int r,int tl,int tr){
calr(i);
if(l>r||l>tr||r<tl||tl>tr){
return -1;
}
if(l>=tl&&r<=tr){
return seg[i].r;
}
shift(i);
int m=(l+r)>>1;
return max(pors((i<<1),l,m,tl,tr),pors((i<<1)^1,m+1,r,tl,tr));
}
}seg;
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin>>n;
for(int i=1;i<=n;i++){
cin>>h[i]>>a[i]>>b[i];
if(a[i]+i<maxn){
ins[i+a[i]].push_back(i);
}
if(b[i]+i+1<maxn){
del[b[i]+i+1].push_back(i);
}
}
cin>>q;
for(int i=0;i<q;i++){
int l,r;
cin>>l>>r;
allq[r].push_back(make_pair(l,i));
}
for(int i=1;i<=n;i++){
for(auto x:del[i]){
seg.upd(1,0,kaf-1,x,x,-inf,inf);
}
for(auto x:ins[i]){
seg.upd(1,0,kaf-1,x,x,h[x],h[x]);
}
seg.qu(1,0,kaf-1,i-b[i],i-a[i],h[i]);
for(auto x:allq[i]){
res[x.second]=seg.pors(1,0,kaf-1,x.first,i);
}
}
for(int i=0;i<q;i++){
cout<<res[i]<<"\n";
}
}
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