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;
typedef long long ll;
const int N=2e5+5;
int n,q;
int a[N];
int d[N],v1[N],v2[N],l1[N],l2[N];
struct node{
int val;
node *l,*r;
node():val(0),l(nullptr),r(nullptr){}
node(int val):val(val),l(nullptr),r(nullptr){}
node(int val,node *l,node *r):val(val),l(l),r(r){}
};
typedef node* nodeptr;
struct maxtree{
nodeptr rt[N];
void build(int l,int r,nodeptr &t){
t=new node(0);
if(l==r)return;
int m=(l+r)/2;
build(l,m,t->l);
build(m+1,r,t->r);
}
void build(int ver){
build(1,n,rt[ver]);
}
void update(int l,int r,nodeptr &t,nodeptr k,int x,int val){
t=new node(*k);
t->val=max(t->val,val);
if(l==r)return;
int m=(l+r)/2;
if(x<=m)update(l,m,t->l,k->l,x,val);
else update(m+1,r,t->r,k->r,x,val);
}
void update(int from,int to,int idx,int val){
update(1,n,rt[to],rt[from],idx,val);
}
int query(int l,int r,nodeptr t,int x,int y){
if(y<l||r<x)return 0;
if(x<=l&&r<=y)return t->val;
int m=(l+r)/2;
return max(query(l,m,t->l,x,y),query(m+1,r,t->r,x,y));
}
int query(int ver,int l,int r){
return query(1,n,rt[ver],l,r);
}
}mxs;
struct mnstree{
nodeptr rt[N];
void build(int l,int r,nodeptr &t){
t=new node(n);
if(l==r)return;
int m=(l+r)/2;
build(l,m,t->l);
build(m+1,r,t->r);
}
void build(int ver){
build(1,n,rt[ver]);
}
void update(int l,int r,nodeptr &t,nodeptr k,int x,int val){
t=new node(*k);
t->val=min(t->val,val);
if(l==r)return;
int m=(l+r)/2;
if(x<=m)update(l,m,t->l,k->l,x,val);
else update(m+1,r,t->r,k->r,x,val);
}
void update(int from,int to,int idx,int val){
update(1,n,rt[to],rt[from],idx,val);
}
int query(int l,int r,nodeptr t,int x,int y){
if(y<l||r<x)return n;
if(x<=l&&r<=y)return t->val;
int m=(l+r)/2;
return min(query(l,m,t->l,x,y),query(m+1,r,t->r,x,y));
}
int query(int ver,int l,int r){
return query(1,n,rt[ver],l,r);
}
}mns;
int main(){
cin.tie(nullptr)->sync_with_stdio(false);
cin >> n;
for(int i=1;i<=n;i++){
cin >> a[i];
}
a[0]=-2e9;
a[n+1]=2e9;
for(int i=1;i<n;i++){
d[i]=a[i+1]-a[i];
}
int sum=0;
for(int i=n-1;i>0;i--){
v1[i]=l1[i]=sum-d[i];
sum+=d[i];
}
sort(l1+1,l1+n);
mxs.build(0);
for(int i=1;i<n;i++){
int idx=lower_bound(l1+1,l1+n,v1[i])-l1;
mxs.update(i-1,i,idx,i);
}
sum=0;
for(int i=1;i<n;i++){
v2[i]=l2[i]=sum-d[i];
sum+=d[i];
}
sort(l2+1,l2+n);
mns.build(n);
for(int i=n-1;i>0;i--){
int idx=lower_bound(l2+1,l2+n,v2[i])-l2;
mns.update(i+1,i,idx,i);
}
cin >> q;
while(q--){
int x;
cin >> x;
if(x<=a[1]){
cout << a[n]-x << '\n';
continue;
}
if(x>=a[n]){
cout << x-a[1] << '\n';
continue;
}
ll ans=0;
int l=lower_bound(a+1,a+n+1,x)-a-1;
int r=upper_bound(a+1,a+n+1,x)-a;
if(r-l==1){
if(x-a[l]<=a[r]-x){
ans+=x-a[l];
x=l;
l--;
}else{
ans+=a[r]-x;
x=r;
r++;
}
}else{
x=(l+r)/2;
}
while(1<=l&&r<=n){
if(a[x]-a[l]<=a[r]-a[x]){
int idx=lower_bound(l1+1,l1+n,a[n]-a[x])-l1-1;
int res=mxs.query(l-1,1,idx)+1;
ans+=a[x]-a[res];
x=res;
l=res-1;
}else{
int idx=upper_bound(l2+1,l2+n,a[x]-a[1])-l2-1;
int res=mns.query(r,1,idx);
ans+=a[res]-a[x];
x=res;
r=res+1;
}
}
if(r<=n){
ans+=a[n]-a[x];
}
if(1<=l){
ans+=a[x]-a[1];
}
cout << ans << '\n';
}
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |