oj.uz

Submission #305663

# Submission time Handle Problem Language Result Execution time Memory
305663 2020-09-23T18:42:26 Z baluteshih Comparing Plants (IOI20_plants) C++14
27 / 100
 1982 ms 104192 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
#define X first
#define Y second
#define ALL(v) v.begin(),v.end()
#define SZ(a) ((int)a.size())
#define pb push_back

const int INF=1e9;
struct node
{
    int pa,dis;
    node operator+(const node &a)const{
        return node{a.pa,dis+a.dis};
    }
}Rtr[200005][20],Ltr[200005][20];
pii seg3[1600005],seg4[1600005];
int seg1[800005],seg2[800005],lazy1[800005],lazy2[800005];
int layer[400005];
vector<int> store[200005];

void build(int l,int r,int rt,const vector<int> &v,int *seg)
{
    if(l==r)
        return seg[rt]=v[l],void();
    int mid=(l+r)>>1;
    build(l,mid,rt<<1,v,seg),build(mid+1,r,rt<<1|1,v,seg);
    seg[rt]=min(seg[rt<<1],seg[rt<<1|1]);
}

void down(int rt,int *seg,int *lazy)
{
    if(lazy[rt])
    {
        seg[rt<<1]+=lazy[rt],lazy[rt<<1]+=lazy[rt];
        seg[rt<<1|1]+=lazy[rt],lazy[rt<<1|1]+=lazy[rt];
        lazy[rt]=0;
    }
}

void modify(int L,int R,int l,int r,int rt,int val,int *seg,int *lazy)
{
    if(l!=r) down(rt,seg,lazy);
    if(L<=l&&R>=r)
        return lazy[rt]+=val,seg[rt]+=val,void();
    int mid=(l+r)>>1;
    if(L<=mid)
        modify(L,R,l,mid,rt<<1,val,seg,lazy);
    if(R>mid)
        modify(L,R,mid+1,r,rt<<1|1,val,seg,lazy);
    seg[rt]=min(seg[rt<<1],seg[rt<<1|1]);
}

int query(int l,int r,int rt,int *seg,int *lazy)
{
    if(l!=r) down(rt,seg,lazy);
    if(l==r)
        return l;
    int mid=(l+r)>>1;
    if(seg[rt<<1]<=seg[rt<<1|1])
        return query(l,mid,rt<<1,seg,lazy);
    return query(mid+1,r,rt<<1|1,seg,lazy);
}

void dfs(int l,int r,int rt,int *seg,int *lazy,vector<int> &rst)
{
    if(l!=r) down(rt,seg,lazy);
    if(l==r)
        return rst.pb(l);
    int mid=(l+r)>>1;
    if(seg[rt<<1]==0)
        dfs(l,mid,rt<<1,seg,lazy,rst);
    if(seg[rt<<1|1]==0)
        dfs(mid+1,r,rt<<1|1,seg,lazy,rst);
}

void build3(int l,int r,int rt)
{
    seg3[rt]=pii(INF,l);
    if(l==r)
        return;
    int mid=(l+r)>>1;
    build3(l,mid,rt<<1),build3(mid+1,r,rt<<1|1);
}

void build4(int l,int r,int rt)
{
    seg4[rt]=pii(INF,-r);
    if(l==r)
        return;
    int mid=(l+r)>>1;
    build4(l,mid,rt<<1),build4(mid+1,r,rt<<1|1);
}

void modify3(int x,int l,int r,int rt,int val)
{
    if(l==r)
        return seg3[rt]=pii(val,l),void();
    int mid=(l+r)>>1;
    if(x<=mid)
        modify3(x,l,mid,rt<<1,val);
    else
        modify3(x,mid+1,r,rt<<1|1,val);
    seg3[rt]=min(seg3[rt<<1],seg3[rt<<1|1]);
}

void modify4(int x,int l,int r,int rt,int val)
{
    if(l==r)
        return seg4[rt]=pii(val,-r),void();
    int mid=(l+r)>>1;
    if(x<=mid)
        modify4(x,l,mid,rt<<1,val);
    else
        modify4(x,mid+1,r,rt<<1|1,val);
    seg4[rt]=min(seg4[rt<<1],seg4[rt<<1|1]);
}

pii query2(int L,int R,int l,int r,int rt,pii *seg)
{
    if(L<=l&&R>=r)
        return seg[rt];
    int mid=(l+r)>>1;
    if(R<=mid)
        return query2(L,R,l,mid,rt<<1,seg);
    if(L>mid)
        return query2(L,R,mid+1,r,rt<<1|1,seg);
    return min(query2(L,R,l,mid,rt<<1,seg),query2(L,R,mid+1,r,rt<<1|1,seg));
}

int arr[200005],K,n,L;

void init(int k, vector<int> r)
{
    n=SZ(r),K=k,L=__lg(n);
    int ly=0;
	build(0,n-1,1,r,seg1),build(0,n-1,1,vector<int>(n,INF),seg2);
    for(int i=0;i<n;++ly)
    {
        while(seg1[1]==0)
        {
            int u=query(0,n-1,1,seg1,lazy1);
            modify(u,u,0,n-1,1,INF,seg1,lazy1),modify(u,u,0,n-1,1,-INF,seg2,lazy2);
            if(u+k<=n)
                modify(u+1,u+k-1,0,n-1,1,1,seg2,lazy2);
            else
            {
                if(u<n-1)
                    modify(u+1,n-1,0,n-1,1,1,seg2,lazy2);
                modify(0,k-n+u-1,0,n-1,1,1,seg2,lazy2);
            }
        }
        vector<int> rst;
        dfs(0,n-1,1,seg2,lazy2,rst);
        for(int u:rst)
        {
            if(u>=k-1)
                modify(u-k+1,u,0,n-1,1,-1,seg1,lazy1);
            else
                modify(0,u,0,n-1,1,-1,seg1,lazy1),modify(n-(k-u-1),n-1,0,n-1,1,-1,seg1,lazy1);
            if(u+k<=n)
                modify(u+1,u+k-1,0,n-1,1,-1,seg2,lazy2);
            else
            {
                if(u<n-1)
                    modify(u+1,n-1,0,n-1,1,-1,seg2,lazy2);
                modify(0,k-n+u-1,0,n-1,1,-1,seg2,lazy2);
            }
            modify(u,u,0,n-1,1,INF,seg2,lazy2);
            layer[u]=ly;
        }
        i+=SZ(rst),store[ly].swap(rst);
    }
    for(int i=0;i<n;++i)
        layer[i+n]=layer[i];
    build3(0,2*n-1,1),build4(0,2*n-1,1);
    for(int i=ly-1;i>=0;--i)
    {
        for(int u:store[i])
        {
            pii tmp=query2(u+n-k+1,u+n,0,2*n-1,1,seg3);
            if(tmp.X==INF)
                Ltr[u][0]=node{u,0};
            else 
                Ltr[u][0]=node{tmp.Y%n,u+n-tmp.Y};
            tmp=query2(u,u+k-1,0,2*n-1,1,seg4);
            if(tmp.X==INF)
                Rtr[u][0]=node{u,0};
            else
                Rtr[u][0]=node{(-tmp.Y)%n,(-tmp.Y)-u};
        }
        for(int u:store[i])
            modify3(u,0,2*n-1,1,layer[u]),modify3(u+n,0,2*n-1,1,layer[u]),
            modify4(u,0,2*n-1,1,layer[u]),modify4(u+n,0,2*n-1,1,layer[u]);
    }
    for(int t=1;t<=L;++t)
        for(int i=0;i<n;++i)
            Ltr[i][t]=Ltr[i][t-1]+Ltr[Ltr[i][t-1].pa][t-1],Rtr[i][t]=Rtr[i][t-1]+Rtr[Rtr[i][t-1].pa][t-1];
}

int compare_plants(int x, int y)
{
    if(layer[x]==layer[y]) return 0;
    int rt=1,tar,nw,dis;
    if(layer[x]>layer[y])
        swap(x,y),rt=-1;
    if(x>y)
        tar=y+n;
    else
        tar=y;
    nw=x;
    if(nw+K>tar)
        return rt;
    dis=0;
    for(int i=L;i>=0;--i)
        if(x+dis+Rtr[nw][i].dis+K<=tar)
            dis+=Rtr[nw][i].dis,nw=Rtr[nw][i].pa;
    dis+=Rtr[nw][0].dis,nw=Rtr[nw][0].pa;
    if(layer[y]>layer[nw]&&dis+K>tar)
        return rt;
    nw=x;
    if(x<y)
        tar=y-n;
    else
        tar=y;
    if(nw-K<tar)
        return rt;
    dis=0;
    for(int i=L;i>=0;--i)
        if(x-dis-Ltr[nw][i].dis-K>=tar)
            dis-=Ltr[nw][i].dis,nw=Ltr[nw][i].pa;
    dis-=Ltr[nw][0].dis,nw=Ltr[nw][0].pa;
    if(layer[y]>layer[nw]&&dis-K<tar)
        return rt;
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Incorrect 4 ms 5120 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 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 9 ms 5632 KB Output is correct
7 Correct 101 ms 10528 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 9 ms 5632 KB Output is correct
10 Correct 100 ms 10488 KB Output is correct
11 Correct 97 ms 10360 KB Output is correct
12 Correct 98 ms 10744 KB Output is correct
13 Correct 100 ms 10656 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 9 ms 5632 KB Output is correct
7 Correct 101 ms 10528 KB Output is correct
8 Correct 6 ms 5248 KB Output is correct
9 Correct 9 ms 5632 KB Output is correct
10 Correct 100 ms 10488 KB Output is correct
11 Correct 97 ms 10360 KB Output is correct
12 Correct 98 ms 10744 KB Output is correct
13 Correct 100 ms 10656 KB Output is correct
14 Correct 200 ms 18168 KB Output is correct
15 Correct 1973 ms 104164 KB Output is correct
16 Correct 204 ms 18168 KB Output is correct
17 Correct 1982 ms 104036 KB Output is correct
18 Correct 1240 ms 104164 KB Output is correct
19 Correct 1226 ms 104168 KB Output is correct
20 Correct 1820 ms 104192 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Incorrect 110 ms 8824 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Incorrect 4 ms 5120 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Incorrect 5 ms 5120 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Incorrect 4 ms 5120 KB Output isn't correct
5 Halted 0 ms 0 KB -