oj.uz

Submission #721191

# Submission time Handle Problem Language Result Execution time Memory
721191 2023-04-10T13:33:48 Z bin9638 Comparing Plants (IOI20_plants) C++17
14 / 100
 4000 ms 71816 KB 
#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],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;
}
 
bool check_hihi(int u)
{
    if(a[u]!=0)
        return 0;
    for(int j=1;j<k;j++)
        if(a[(u-j+n)%n]==0)
            return 0;
    return 1;
}
 
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;
    for(int i=0;i<n;i++)
    {
        build(T.get_min(1,1,n*2,1,n*2).sc);
     //   for(int i=0;i<n;i++)cout<<T.get_max(1,1,n*2,i+1,i+1).fs<<" ";cout<<endl;
    }*/
        int dem=n;
    for(int t=0;t<n;t++)
    {
    for(int i=0;i<n;i++)
        if(check_hihi(i))
        {
            h[i]=--dem;
            for(int j=0;j<k;j++)
                a[(i-j+n)%n]--;
            break;
        }
    }
    //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;
        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[pre[i][k-1]][k-1];
            nxt[i][k]=nxt[nxt[i][k-1]][k-1];
        }
}
 
int dis(int x,int y)
{
    return min(min(abs(x-y),abs(x+n-y)),abs(y+n-x));
}
 
bool check(int x,int y)
{
   // cout<<x<<" "<<y<<endl;
    int vt=x;
  //  cout<<dis(x,y)<<endl;
    if(dis(vt,y)>k-1)
    {
        for(int k=LOG;k>=0;k--)
            if(pre[vt][k]!=-1&&dis(pre[vt][k],y)>k-1)
                vt=pre[vt][k];
    }
    if(dis(vt,y)>k-1)
        vt=pre[vt][0];
    if(vt!=-1&&h[vt]>=h[y])
        return 1;
    vt=x;
     if(dis(vt,y)>k-1)
     {
    for(int k=LOG;k>=0;k--)
        if(nxt[vt][k]!=-1&&dis(nxt[vt][k],y)>k-1)
            vt=nxt[vt][k];
     }
     if(dis(vt,y)>k-1)
        vt=nxt[vt][0];
     if(vt!=-1&&h[vt]>=h[y])
        return 1;
    return 0;
}
 
int compare_plants(int x, int y)
{
    if(h[x]>h[y])
        return 1;
    if(h[y]>h[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

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 65996 KB Output is correct
2 Correct 24 ms 66000 KB Output is correct
3 Correct 26 ms 65956 KB Output is correct
4 Incorrect 28 ms 66052 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 66004 KB Output is correct
2 Correct 26 ms 65976 KB Output is correct
3 Correct 29 ms 66004 KB Output is correct
4 Correct 24 ms 66020 KB Output is correct
5 Correct 34 ms 66020 KB Output is correct
6 Correct 39 ms 66216 KB Output is correct
7 Correct 298 ms 69708 KB Output is correct
8 Correct 27 ms 66128 KB Output is correct
9 Correct 37 ms 66172 KB Output is correct
10 Correct 288 ms 69688 KB Output is correct
11 Correct 208 ms 69580 KB Output is correct
12 Correct 208 ms 69908 KB Output is correct
13 Correct 327 ms 69692 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 66004 KB Output is correct
2 Correct 26 ms 65976 KB Output is correct
3 Correct 29 ms 66004 KB Output is correct
4 Correct 24 ms 66020 KB Output is correct
5 Correct 34 ms 66020 KB Output is correct
6 Correct 39 ms 66216 KB Output is correct
7 Correct 298 ms 69708 KB Output is correct
8 Correct 27 ms 66128 KB Output is correct
9 Correct 37 ms 66172 KB Output is correct
10 Correct 288 ms 69688 KB Output is correct
11 Correct 208 ms 69580 KB Output is correct
12 Correct 208 ms 69908 KB Output is correct
13 Correct 327 ms 69692 KB Output is correct
14 Correct 2345 ms 71816 KB Output is correct
15 Execution timed out 4054 ms 26360 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 65996 KB Output is correct
2 Correct 28 ms 66060 KB Output is correct
3 Correct 97 ms 69108 KB Output is correct
4 Execution timed out 4089 ms 28624 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 66004 KB Output is correct
2 Correct 28 ms 65972 KB Output is correct
3 Incorrect 27 ms 66012 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 65988 KB Output is correct
2 Correct 26 ms 66120 KB Output is correct
3 Incorrect 29 ms 66008 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 65996 KB Output is correct
2 Correct 24 ms 66000 KB Output is correct
3 Correct 26 ms 65956 KB Output is correct
4 Incorrect 28 ms 66052 KB Output isn't correct
5 Halted 0 ms 0 KB -