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Submission #803117

# Submission time Handle Problem Language Result Execution time Memory
803117 2023-08-02T22:26:38 Z Augustyn Palindromi (COCI22_palindromi) C++17
110 / 110
 189 ms 72856 KB 
#include<iostream>
#include<vector>
#include<unordered_map>
using namespace std;
struct pal_tree_node
{
    int dlug;
    long long hasz;
    pal_tree_node *shrt[2], *syn[2];
    pal_tree_node(int xd,long long hz)
    {
        dlug=xd;
        hasz=hz;
        shrt[0]=shrt[1]=syn[0]=syn[1]=NULL;
    }
};
struct lista
{
    int wart;
    int l, r;
    lista(int a)
    {
        wart=a;
        l=-1;
        r=-1;
    }
    lista()
    {
        wart=0;
        l=-1;
        r=-1;
    }
};

vector<int>nal;
vector<bool>seq;
vector<pal_tree_node*>pref,suf;
pal_tree_node* pust;
pal_tree_node* jz[2];
void ini(int n)
{
    nal.resize(n);
    seq.resize(n);
    pref.resize(n);
    suf.resize(n);
    pust = new pal_tree_node(0,0);
    jz[0] = new pal_tree_node(1,50000000000001);
    jz[1] = new pal_tree_node(1,50000000000002);
    jz[0]->shrt[0]=jz[1]->shrt[1]=pust;
}
int znajdz(int ter)
{
    if(nal[ter]==ter)
        return ter;
    nal[ter]=znajdz(nal[ter]);
    return nal[ter];
}
int main()
{
    ios_base::sync_with_stdio(0);
    int n;
    cin>>n;
    ini(n);
    vector<int>sz(n);
    vector<lista>akt_ciag(n);
    vector<pair<int,int>>po(n);
    vector<unordered_map<long long,bool>>mapy(n);
    vector<vector<long long>>tusa(n);
    vector<int>konc(n),gdzie_w_konc(n);
    for(int i=0;i<n;++i)
    {
        char wcz;
        cin>>wcz;
        wcz-='0';
        seq[i]=wcz;
        nal[i]=i;
        pref[i]=suf[i]=jz[wcz];
        akt_ciag[i].l=akt_ciag[i].r=-1;
        akt_ciag[i].wart=i;
        po[i].first=po[i].second=i;
        tusa[i].push_back(wcz+1);
        sz[i]=1;
        mapy[i][wcz+1]=1;
    }
    vector<pair<int,int>>zlacz(n-1);
    for(int ile_merge=0;ile_merge<n-1;++ile_merge)
    {
        cin>>zlacz[ile_merge].first>>zlacz[ile_merge].second;
        --zlacz[ile_merge].first; --zlacz[ile_merge].second;
        int a,b;
        a=zlacz[ile_merge].first; b=zlacz[ile_merge].second;
        a=znajdz(a);
        b=znajdz(b);
        akt_ciag[po[a].second].r=po[b].first;
        akt_ciag[po[b].first].l=po[a].second;
        po[a].second=po[b].second;
        nal[b]=a;
    }
    int tut=po[znajdz(0)].first;
    for(int i=0;i<n;++i)
    {
        gdzie_w_konc[tut]=i;
        konc[i]=tut;
        po[tut].first=po[tut].second=i;
        tut=akt_ciag[tut].r;
    }

    for(int i=0;i<n;++i)
    {
        akt_ciag[i].l=akt_ciag[i].r=-1;
        nal[i]=i;
        po[i].first=po[i].second=gdzie_w_konc[i];
    }
    int a,b;
    for(int ile_merge=0;ile_merge<n-1;++ile_merge)
    {
        a=znajdz(zlacz[ile_merge].first); b=znajdz(zlacz[ile_merge].second);
        if(po[a].second-po[a].first<=po[b].second-po[b].first)
        {
            pal_tree_node* najd=pref[b];
            for(int i=po[a].second;i>=po[a].first;--i)
            {
                if(najd->dlug==po[b].second-i)
                {
                    najd=najd->shrt[seq[konc[i]]];
                    if(najd==NULL)
                        najd=pust;
                }
                if(najd->dlug!=0)
                    if(seq[konc[i+1+(najd->dlug)]]!=seq[konc[i]])
                    {
                        najd=najd->shrt[seq[konc[i]]];
                        if(najd==NULL)
                            najd=pust;
                    }
                if(najd->dlug==0)
                {
                    if(seq[konc[i+1]]==seq[konc[i]])
                    {
                        //dwie takie same
                        if(pust->syn[seq[konc[i]]]==NULL)
                        {
                            pal_tree_node* pom= new pal_tree_node(2,(seq[konc[i]]+1)*4);
                            pust->syn[seq[konc[i]]]=pom;
                            pom->shrt[seq[konc[i]]]=jz[seq[konc[i]]];
                        }
                        najd=pust->syn[seq[konc[i]]];
                        if(mapy[b][(seq[konc[i]]+1)*4]!=1)
                        {
                            mapy[b][(seq[konc[i]]+1)*4]=1;
                            tusa[b].push_back((seq[konc[i]]+1)*4);
                            ++sz[b];
                        }
                    }
                    else
                    {
                        //jeden taki sam
                        najd=jz[seq[konc[i]]];
                        if(mapy[b][seq[konc[i]]+1]!=1)
                        {
                            mapy[b][seq[konc[i]]+1]=1;
                            tusa[b].push_back(seq[konc[i]]+1);
                            ++sz[b];
                        }
                    }
                }
                else
                {
                    //dodajemy normalnie
                    if(najd->syn[seq[konc[i]]]==NULL)
                    {
                        //dodaj wierz
                        pal_tree_node* pom= new pal_tree_node((najd->dlug)+2,(najd->hasz)*3+seq[konc[i]]+1);
                        najd->syn[seq[konc[i]]]=pom;
                        //znajdz pom->shrt
                        pal_tree_node* pom2=najd->shrt[seq[konc[i]]];
                        if(pom2==NULL)
                            pom2=jz[seq[konc[i]]];
                        else
                            pom2=pom2->syn[seq[konc[i]]];
                        //no i teraz musze wiedziec co jest po nim
                        int x=seq[konc[i+pom2->dlug]];
                        pom->shrt[x]=pom2;
                        pom2=pom2->shrt[1-x];
                        pom->shrt[1-x]=pom2;
                    }
                    najd=najd->syn[seq[konc[i]]];
                    if(mapy[b][najd->hasz]!=1)
                    {
                        mapy[b][najd->hasz]=1;
                        tusa[b].push_back(najd->hasz);
                        ++sz[b];
                    }
                }
                //sprawdz czy najd jest sufixem b
                if(najd->dlug==po[b].second-i+1)
                    suf[b]=najd;
            }
            pref[b]=najd;
            po[b].first=po[a].first;
            nal[a]=b;
            for(auto i:tusa[a])
            {
                if(mapy[b][i]!=1)
                {
                    mapy[b][i]=1;
                    tusa[b].push_back(i);
                    ++sz[b];
                }
            }
            a=b;
        }
        else
        {
            pal_tree_node* najd=suf[a];
            for(int i=po[b].first;i<=po[b].second;++i)
            {
                if(najd->dlug==i-po[a].first)
                {
                    najd=najd->shrt[seq[konc[i]]];
                    if(najd==NULL)
                        najd=pust;
                }
                if(najd->dlug!=0)
                    if(seq[konc[i-1-(najd->dlug)]]!=seq[konc[i]])
                    {
                        najd=najd->shrt[seq[konc[i]]];
                        if(najd==NULL)
                            najd=pust;
                    }
                if(najd->dlug==0)
                {
                    if(seq[konc[i-1]]==seq[konc[i]])
                    {
                        //dwie takie same
                        if(pust->syn[seq[konc[i]]]==NULL)
                        {
                            pal_tree_node* pom= new pal_tree_node(2,(seq[konc[i]]+1)*4);
                            pust->syn[seq[konc[i]]]=pom;
                            pom->shrt[seq[konc[i]]]=jz[seq[konc[i]]];
                        }
                        najd=pust->syn[seq[konc[i]]];
                        if(mapy[a][(seq[konc[i]]+1)*4]!=1)
                        {
                            mapy[a][(seq[konc[i]]+1)*4]=1;
                            tusa[a].push_back((seq[konc[i]]+1)*4);
                            ++sz[a];
                        }
                    }
                    else
                    {
                        //jeden taki sam
                        najd=jz[seq[konc[i]]];
                        if(mapy[a][seq[konc[i]]+1]!=1)
                        {
                            mapy[a][seq[konc[i]]+1]=1;
                            tusa[a].push_back(seq[konc[i]]+1);
                            ++sz[a];
                        }
                    }
                }
                else
                {
                    //dodajemy normalnie
                    if(najd->syn[seq[konc[i]]]==NULL)
                    {
                        //dodaj wierz
                        pal_tree_node* pom= new pal_tree_node((najd->dlug)+2,(najd->hasz)*3+seq[konc[i]]+1);
                        najd->syn[seq[konc[i]]]=pom;
                        //znajdz pom->shrt
                        pal_tree_node* pom2=najd->shrt[seq[konc[i]]];
                        if(pom2==NULL)
                            pom2=jz[seq[konc[i]]];
                        else
                            pom2=pom2->syn[seq[konc[i]]];
                        //no i teraz musze wiedziec co jest po nim
                        int x=seq[konc[i-pom2->dlug]];
                        pom->shrt[x]=pom2;
                        pom2=pom2->shrt[1-x];
                        pom->shrt[1-x]=pom2;
                    }
                    najd=najd->syn[seq[konc[i]]];
                    if(mapy[a][najd->hasz]!=1)
                    {
                        mapy[a][najd->hasz]=1;
                        tusa[a].push_back(najd->hasz);
                        ++sz[a];
                    }
                }
                //sprawdz czy najd jest sufixem b
                if(najd->dlug==i-po[a].first+1)
                    pref[a]=najd;
            }
            suf[a]=najd;
            po[a].second=po[b].second;
            nal[b]=a;
            for(auto i:tusa[b])
            {
                if(mapy[a][i]!=1)
                {
                    mapy[a][i]=1;
                    tusa[a].push_back(i);
                    ++sz[a];
                }
            }
            b=a;
        }
        printf("%d\n",sz[a]);
    }
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:77:27: warning: array subscript has type 'char' [-Wchar-subscripts]
   77 |         pref[i]=suf[i]=jz[wcz];
      |                           ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 30520 KB Output is correct
2 Correct 79 ms 40880 KB Output is correct
3 Correct 57 ms 30172 KB Output is correct
4 Correct 80 ms 41508 KB Output is correct
5 Correct 61 ms 31764 KB Output is correct
6 Correct 79 ms 40124 KB Output is correct
7 Correct 63 ms 31576 KB Output is correct
8 Correct 80 ms 39544 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 596 KB Output is correct
23 Correct 1 ms 596 KB Output is correct
24 Correct 1 ms 596 KB Output is correct
25 Correct 1 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 68 ms 30520 KB Output is correct
28 Correct 79 ms 40880 KB Output is correct
29 Correct 57 ms 30172 KB Output is correct
30 Correct 80 ms 41508 KB Output is correct
31 Correct 61 ms 31764 KB Output is correct
32 Correct 79 ms 40124 KB Output is correct
33 Correct 63 ms 31576 KB Output is correct
34 Correct 80 ms 39544 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 181 ms 47668 KB Output is correct
37 Correct 129 ms 34496 KB Output is correct
38 Correct 177 ms 48808 KB Output is correct
39 Correct 134 ms 36416 KB Output is correct
40 Correct 107 ms 40160 KB Output is correct
41 Correct 81 ms 31592 KB Output is correct
42 Correct 84 ms 39504 KB Output is correct
43 Correct 59 ms 31436 KB Output is correct
44 Correct 82 ms 39300 KB Output is correct
45 Correct 61 ms 31160 KB Output is correct
46 Correct 189 ms 72856 KB Output is correct
47 Correct 114 ms 41240 KB Output is correct