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>
#ifndef SKY
#include "plants.h"
#endif // SKY
using namespace std;
#define N 400010
#define ll long long
#define fs first
#define sc second
#define ii pair<int,int>
#define pb push_back
int dem,k,n,h[N],a[N],pre[N][21],nxt[N][21];
ll dis_pre[N][21],dis_nxt[N][21];
int LOG;
struct IT
{
struct node
{
ii min_val,max_val;
int t=0;
}ST[N*4];
void down(int id)
{
ST[id*2].min_val.fs+=ST[id].t;
ST[id*2].max_val.fs+=ST[id].t;
ST[id*2].t+=ST[id].t;
ST[id*2+1].min_val.fs+=ST[id].t;
ST[id*2+1].max_val.fs+=ST[id].t;
ST[id*2+1].t+=ST[id].t;
ST[id].t=0;
}
void update(int id,int l,int r,int i,ii val)
{
if(l>i||r<i)
return;
if(l==r)
{
ST[id].min_val=ST[id].max_val=val;
return;
}
down(id);
int mid=(l+r)/2;
update(id*2,l,mid,i,val);
update(id*2+1,mid+1,r,i,val);
ST[id].min_val=min(ST[id*2].min_val,ST[id*2+1].min_val);
ST[id].max_val=max(ST[id*2].max_val,ST[id*2+1].max_val);
}
void them(int id,int l,int r,int u,int v,int val)
{
if(l>r||l>v||r<u)
return;
if(l>=u&&r<=v)
{
ST[id].t+=val;
ST[id].min_val.fs+=val;
ST[id].max_val.fs+=val;
return;
}
down(id);
int mid=(l+r)/2;
them(id*2,l,mid,u,v,val);
them(id*2+1,mid+1,r,u,v,val);
ST[id].min_val=min(ST[id*2].min_val,ST[id*2+1].min_val);
ST[id].max_val=max(ST[id*2].max_val,ST[id*2+1].max_val);
}
ii get_min(int id,int l,int r,int u,int v)
{
if(l>v||r<u)
return {1e9,-1};
if(l>=u&&r<=v)
return ST[id].min_val;
down(id);
int mid=(l+r)/2;
return min(get_min(id*2,l,mid,u,v),get_min(id*2+1,mid+1,r,u,v));
}
ii get_max(int id,int l,int r,int u,int v)
{
if(l>v||r<u)
return {-1e9,-1};
if(l>=u&&r<=v)
return ST[id].max_val;
down(id);
int mid=(l+r)/2;
return max(get_max(id*2,l,mid,u,v),get_max(id*2+1,mid+1,r,u,v));
}
}T;
void build(int i)
{
while(T.get_min(1,1,n*2,i+1+n-k+1,i+1+n-1).fs==0)
{
build(T.get_min(1,1,n*2,i+1+n-k+1,i+1+n-1).sc);
}
T.them(1,1,n*2,i+1+n-k+1,i+1+n-1,-1);
if(i-k+1>=0)
{
T.them(1,1,n*2,i+1-k+1,i+1-1,-1);
}else
{
T.them(1,1,n*2,1,i+1-1,-1);
T.them(1,1,n*2,n*2-(k-i-2),n*2,-1);
}
T.update(1,1,n*2,i+1,{1e9,i});
T.update(1,1,n*2,i+n+1,{1e9,i});
h[i]=--dem;
}
void init(int cc, vector<int> r)
{
k=cc;
n=r.size();
for(int i=0;i<n;i++)
{
a[i]=r[i];
T.update(1,1,n*2,i+1,{a[i],i});
T.update(1,1,n*2,i+n+1,{a[i],i});
}
dem=n;
while(T.get_min(1,1,n*2,1,n*2).fs==0)
{
build(T.get_min(1,1,n*2,1,n*2).sc);
}
// for(int i=0;i<n;i++)cout<<h[i]<<" ";
for(int i=0;i<n;i++)
{
T.update(1,1,n*2,i+1,{-1e9,-1});
T.update(1,1,n*2,i+n+1,{-1e9,-1});
}
vector<ii>s;
for(int i=0;i<n;i++)
s.pb({h[i],i});
sort(s.begin(),s.end());
memset(pre,-1,sizeof(pre));
memset(nxt,-1,sizeof(nxt));
for(auto cc:s)
{
int i=cc.sc;
pre[i][0]=T.get_max(1,1,n*2,i+1+n-k+1,i+1+n-1).sc;
nxt[i][0]=T.get_max(1,1,n*2,i+1+1,i+1+k-1).sc;
int vt=T.get_max(1,1,n*2,i+1+n-k+1,i+1+n-1).sc;
if(vt!=-1)
{
dis_pre[i][0]=(vt<=i ? i-vt :i+n-vt);
}
vt=T.get_max(1,1,n*2,i+1+1,i+1+k-1).sc;
if(vt!=-1)
{
dis_nxt[i][0]=(vt>=i ? vt-i : vt+n-i);
}
T.update(1,1,n*2,i+1,cc);
T.update(1,1,n*2,i+n+1,cc);
//cout<<i<<" "<<pre[i][0]<<" "<<nxt[i][0]<<endl;
}
LOG=log2(n);
for(int k=1;k<=LOG;k++)
for(int i=0;i<n;i++)
{
pre[i][k]=(pre[i][k-1]==-1 ? -1 : pre[pre[i][k-1]][k-1]);
nxt[i][k]=(nxt[i][k-1]==-1 ? -1 :nxt[nxt[i][k-1]][k-1]);
dis_pre[i][k]=(pre[i][k-1]==-1 ? 1e9 : dis_pre[i][k-1]+dis_pre[pre[i][k-1]][k-1]);
dis_nxt[i][k]=(nxt[i][k-1]==-1 ? 1e9 : dis_nxt[i][k-1]+dis_nxt[nxt[i][k-1]][k-1]);
}
}
bool check(int x,int y)
{
LOG=log2(n);
if(x<y)
{
int vt=x,dis=x+n-y;
for(int k=LOG;k>=0;k--)
if(pre[vt][k]!=-1&&dis_pre[vt][k]<=dis)
{
dis-=dis_pre[vt][k];
vt=pre[vt][k];
}
if(dis<=k-1&&h[vt]>=h[y])
return 1;
vt=x;
dis=y-x;
for(int k=LOG;k>=0;k--)
if(nxt[vt][k]!=-1&&dis_nxt[vt][k]<=dis)
{
dis-=dis_nxt[vt][k];
vt=nxt[vt][k];
}
if(dis<=k-1&&h[vt]>=h[y])
return 1;
}else
{
int vt=x,dis=x-y;
for(int k=LOG;k>=0;k--)
if(pre[vt][k]!=-1&&dis_pre[vt][k]<=dis)
{
dis-=dis_pre[vt][k];
vt=pre[vt][k];
}
if(dis<=k-1&&h[vt]>=h[y])
return 1;
vt=x;
dis=(y+n-x);
for(int k=LOG;k>=0;k--)
if(nxt[vt][k]!=-1&&dis_nxt[vt][k]<=dis)
{
dis-=dis_nxt[vt][k];
vt=nxt[vt][k];
}
if(dis<=k-1&&h[vt]>=h[y])
return 1;
}
return 0;
}
int compare_plants(int x, int y)
{
if(check(x,y))
return 1;
if(check(y,x))
return -1;
return 0;
}
#ifdef SKY
int main()
{
freopen("A.inp","r",stdin);
freopen("A.out","w",stdout);
ios::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
int n,k;
cin>>n>>k;
vector<int>r(n);
for(int i=0;i<n;i++)
cin>>r[i];//,cout<<r[i]<<endl;
init(k,r);
int q;
cin>>q;
while(q--)
{
int x,y;
cin>>x>>y;
cout<<compare_plants(x,y)<<endl;
}
return 0;
}
#endif
# | 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... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |