oj.uz

Submission #304021

# Submission time Handle Problem Language Result Execution time Memory
304021 2020-09-21T00:57:02 Z daniel920712 Comparing Plants (IOI20_plants) C++14
5 / 100
 511 ms 99064 KB 
#include "plants.h"
#include <stdio.h>
#include <vector>
#include <utility>
#include <set>
using namespace std;
vector < int > all;
vector < int > ttt;
vector < int > Next[200005];
vector < pair < int , int > > con[200005];
int N,tt=0;
bool use[2000005]={0};
int Con[200005];
int what[200005];
int now=1;
struct A
{
    int l,r;
    int nxl,nxr;
    int small1,small2;
    int add1,add2;
    int con=0,con1;
}Node[2000005];
void build(int l,int r,int here)
{
    Node[here].l=l;
    Node[here].r=r;
    Node[here].add1=0;
    Node[here].add2=0;
    Node[here].small1=0;
    Node[here].con=0;
    Node[here].con1=0;
    if(l==r)
    {
        Node[here].small2=all[l];
        Node[here].con1=1;
        return ;
    }
    Node[here].nxl=now++;
    Node[here].nxr=now++;
    build(l,(l+r)/2,Node[here].nxl);
    build((l+r)/2+1,r,Node[here].nxr);
    Node[here].small2=min(Node[Node[here].nxl].small2,Node[Node[here].nxr].small2);
    Node[here].small1=min(Node[Node[here].nxl].small1,Node[Node[here].nxr].small1);
    if(Node[Node[here].nxl].small2==Node[here].small2) Node[here].con1+=Node[Node[here].nxl].con1;
    if(Node[Node[here].nxr].small2==Node[here].small2) Node[here].con1+=Node[Node[here].nxr].con1;
}
void UPD(int here)
{
    Node[Node[here].nxl].add1+=Node[here].add1;
    Node[Node[here].nxl].small1+=Node[here].add1;
    Node[Node[here].nxr].add1+=Node[here].add1;
    Node[Node[here].nxr].small1+=Node[here].add1;
    Node[here].add1=0;

    Node[Node[here].nxl].add2+=Node[here].add2;
    Node[Node[here].nxl].small2+=Node[here].add2;
    Node[Node[here].nxr].add2+=Node[here].add2;
    Node[Node[here].nxr].small2+=Node[here].add2;
    Node[here].add2=0;
}
void cha1(int l,int r,int con,int here)
{
    if(l>r) return ;
    if(l==Node[here].l&&r==Node[here].r)
    {
        Node[here].add1+=con;
        Node[here].small1+=con;
        return;
    }
    UPD(here);
    if(r<=(Node[here].l+Node[here].r)/2) cha1(l,r,con,Node[here].nxl);
    else if(l>(Node[here].l+Node[here].r)/2) cha1(l,r,con,Node[here].nxr);
    else
    {
        cha1(l,(Node[here].l+Node[here].r)/2,con,Node[here].nxl);
        cha1((Node[here].l+Node[here].r)/2+1,r,con,Node[here].nxr);
    }
    Node[here].small2=min(Node[Node[here].nxl].small2,Node[Node[here].nxr].small2);
    Node[here].small1=min(Node[Node[here].nxl].small1,Node[Node[here].nxr].small1);
    if(Node[Node[here].nxl].small2==Node[here].small2) Node[here].con1+=Node[Node[here].nxl].con1;
    if(Node[Node[here].nxr].small2==Node[here].small2) Node[here].con1+=Node[Node[here].nxr].con1;
}

void cha2(int l,int r,int con,int here)
{
    if(l>r) return ;
    if(l==Node[here].l&&r==Node[here].r)
    {
        Node[here].add2+=con;
        Node[here].small2+=con;
        return;
    }
    UPD(here);
    if(r<=(Node[here].l+Node[here].r)/2) cha2(l,r,con,Node[here].nxl);
    else if(l>(Node[here].l+Node[here].r)/2) cha2(l,r,con,Node[here].nxr);
    else
    {
        cha2(l,(Node[here].l+Node[here].r)/2,con,Node[here].nxl);
        cha2((Node[here].l+Node[here].r)/2+1,r,con,Node[here].nxr);
    }
    Node[here].small2=min(Node[Node[here].nxl].small2,Node[Node[here].nxr].small2);
    Node[here].small1=min(Node[Node[here].nxl].small1,Node[Node[here].nxr].small1);
    if(Node[Node[here].nxl].small2==Node[here].small2) Node[here].con1+=Node[Node[here].nxl].con1;
    if(Node[Node[here].nxr].small2==Node[here].small2) Node[here].con1+=Node[Node[here].nxr].con1;
}
int Find1(int where,int here)
{
    if(Node[here].l==where&&Node[here].r==where) return Node[here].small1;
    UPD(here);
    if(where<=(Node[here].l+Node[here].r)/2) return Find1(where,Node[here].nxl);
    else return Find1(where,Node[here].nxr);
}
int Find2(int where,int here)
{
    if(Node[here].l==where&&Node[here].r==where) return Node[here].small2;
    UPD(here);
    if(where<=(Node[here].l+Node[here].r)/2) return Find2(where,Node[here].nxl);
    else return Find2(where,Node[here].nxr);
}
void New(int here)
{
    if(Node[here].l==Node[here].r)
    {
        ttt.push_back(Node[here].l);
        Node[here].con++;
        return;
    }
    UPD(here);
    if(Node[Node[here].nxl].con!=Node[Node[here].nxl].con1&&Node[Node[here].nxl].small2==0) New(Node[here].nxl);
    if(Node[Node[here].nxr].con!=Node[Node[here].nxr].con1&&Node[Node[here].nxr].small2==0) New(Node[here].nxr);
    Node[here].con=Node[Node[here].nxl].con+Node[Node[here].nxr].con;
}
void init(int k,vector<int> r)
{
    int a=0,b=0,i,j,ok=0,l,t,t2,x,ll,rr;
    all=r;
    N=r.size();
    if(k==2) tt=1;
    for(i=0;i<N;i++)
    {
        if(k==2)
        {
            if(r[(i+N-1)%N]!=r[i])
            {
                b=0;
                a++;
                con[i].push_back(make_pair(a,0));
                for(j=(i+1)%N;r[(j+N-1)%N]==r[i];j=(j+1)%N)
                {
                    if(j==N-1) ok=1;
                    if(r[i]==0) b--;
                    else b++;
                    con[j].push_back(make_pair(a,b));
                }
            }
        }
        else
        {
            build(0,N-1,0);
            ttt.clear();
            New(0);
            for(auto t:ttt)
            {
                t2=(t+k-1)%N;
                if(t2>=t) cha1(t+1,t2,1,0);
                else
                {
                    cha1(t+1,N-1,1,0);
                    cha1(0,t2,1,0);
                }
            }
            for(i=0;i<N;i++)
            {
                for(j=0;j<N;j++)
                {
                    if(use[j]==0&&Find1(j,0)==0&&Find2(j,0)==0)
                    {
                        x=j;
                        break;
                    }
                }
                //printf("aa %d\n",x);
                what[x]=i;
                use[x]=1;
                t=(x+k-1)%N;
                if(t>=x) cha1(x+1,t,-1,0);
                else
                {
                    cha1(x+1,N-1,-1,0);
                    cha1(0,t,-1,0);
                }

                ll=(x-(k-1)+N)%N;
                rr=(x-1+N)%N;
                if(rr>=ll) cha2(ll,rr,-1,0);
                else
                {
                    cha2(ll,N-1,-1,0);
                    cha2(0,rr,-1,0);
                }
                ttt.clear();
                New(0);
                for(auto t:ttt)
                {
                    t2=(t+k-1)%N;
                    if(t2>=t) cha1(t+1,t2,1,0);
                    else
                    {
                        cha1(t+1,N-1,1,0);
                        cha1(0,t2,1,0);
                    }
                }

            }
        }
    }
	return;
}
bool F(int A,int B)
{
    if(A==B) return 1;
    if(use[A]) return 0;
    use[A]=1;
    for(auto i:Next[A]) if(F(i,B)) return 1;
    return 0;
}
int compare_plants(int x, int y)
{
    int i;
    if(tt)
    {
        for(auto i:con[x])
        {
            for(auto j:con[y])
            {
                if(i.first==j.first)
                {
                    if(i.second<j.second) return -1;
                    return 1;
                }
            }
        }

    }
    else
    {
        if(what[x]<what[y]) return 1;
        else return -1;
    }

	return 0;
}

Compilation message

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:136:21: warning: variable 'ok' set but not used [-Wunused-but-set-variable]
  136 |     int a=0,b=0,i,j,ok=0,l,t,t2,x,ll,rr;
      |                     ^~
plants.cpp:136:26: warning: unused variable 'l' [-Wunused-variable]
  136 |     int a=0,b=0,i,j,ok=0,l,t,t2,x,ll,rr;
      |                          ^
plants.cpp: In function 'int compare_plants(int, int)':
plants.cpp:230:9: warning: unused variable 'i' [-Wunused-variable]
  230 |     int i;
      |         ^
plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:195:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
  195 |                 rr=(x-1+N)%N;
      |                     ~^~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 87928 KB Output is correct
2 Correct 47 ms 87936 KB Output is correct
3 Correct 50 ms 88056 KB Output is correct
4 Correct 47 ms 87928 KB Output is correct
5 Correct 47 ms 87928 KB Output is correct
6 Correct 126 ms 90872 KB Output is correct
7 Correct 133 ms 91640 KB Output is correct
8 Correct 195 ms 98936 KB Output is correct
9 Correct 185 ms 98936 KB Output is correct
10 Correct 186 ms 99064 KB Output is correct
11 Correct 186 ms 98936 KB Output is correct
12 Correct 183 ms 98940 KB Output is correct
13 Correct 179 ms 99064 KB Output is correct
14 Correct 182 ms 98940 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 87928 KB Output is correct
2 Correct 48 ms 87928 KB Output is correct
3 Correct 47 ms 87928 KB Output is correct
4 Correct 47 ms 88016 KB Output is correct
5 Incorrect 49 ms 87928 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 87928 KB Output is correct
2 Correct 48 ms 87928 KB Output is correct
3 Correct 47 ms 87928 KB Output is correct
4 Correct 47 ms 88016 KB Output is correct
5 Incorrect 49 ms 87928 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 87928 KB Output is correct
2 Correct 47 ms 88056 KB Output is correct
3 Incorrect 511 ms 91128 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 87928 KB Output is correct
2 Correct 49 ms 88024 KB Output is correct
3 Correct 48 ms 87928 KB Output is correct
4 Correct 47 ms 87928 KB Output is correct
5 Incorrect 49 ms 87928 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 87928 KB Output is correct
2 Correct 48 ms 87928 KB Output is correct
3 Correct 48 ms 87928 KB Output is correct
4 Incorrect 48 ms 87928 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 87928 KB Output is correct
2 Correct 47 ms 87936 KB Output is correct
3 Correct 50 ms 88056 KB Output is correct
4 Correct 47 ms 87928 KB Output is correct
5 Correct 47 ms 87928 KB Output is correct
6 Correct 126 ms 90872 KB Output is correct
7 Correct 133 ms 91640 KB Output is correct
8 Correct 195 ms 98936 KB Output is correct
9 Correct 185 ms 98936 KB Output is correct
10 Correct 186 ms 99064 KB Output is correct
11 Correct 186 ms 98936 KB Output is correct
12 Correct 183 ms 98940 KB Output is correct
13 Correct 179 ms 99064 KB Output is correct
14 Correct 182 ms 98940 KB Output is correct
15 Correct 47 ms 87928 KB Output is correct
16 Correct 48 ms 87928 KB Output is correct
17 Correct 47 ms 87928 KB Output is correct
18 Correct 47 ms 88016 KB Output is correct
19 Incorrect 49 ms 87928 KB Output isn't correct
20 Halted 0 ms 0 KB -