oj.uz

Submission #1092242

# Submission time Handle Problem Language Result Execution time Memory
1092242 2024-09-23T15:54:12 Z TlenekWodoru Fountain Parks (IOI21_parks) C++17
55 / 100
 996 ms 126696 KB 
#include<bits/stdc++.h>
#include "parks.h"
using namespace std;
struct Edge
{
    int som,ind;
};
map<pair<int,int>,int>M,M2;
vector<Edge>Graf[200009];
vector<int>D[1000009];
pair<int,int>KimJest[1000009];
bool zaj[1000009];
vector<int>Sprz;
int g[1000009];
int match[1000009];
int n,m=0,k=0,N,IleVert=0;
int f[200009],ilosc[200009];
int F(int v)
{
    if(f[v]==v){return v;}
    return f[v]=F(f[v]);
}
void Polacz(int a, int b)
{
    a=F(a);
    b=F(b);
    if(a==b){return;}
    if(ilosc[a]<ilosc[b]){swap(a,b);}
    ilosc[a]+=ilosc[b];
    f[b]=a;
}
bool DFS(int v)
{
    if(zaj[v]){return 0;}
    zaj[v]=1;
    Sprz.push_back(v);
    for(int som : D[v])
    {
        if(match[som]==-1||DFS(match[som]))
        {
            match[v]=som;
            match[som]=v;
            return 1;
        }
    }
    return 0;
}
void SKOJ()
{
    random_shuffle(g,g+N);
    for(int i=0;i<N;i++)
    {
        match[i]=-1;
        zaj[i]=0;
    }
    for(int i=0;i<N;i++)
    {
        int a=g[i];
        for(int b : D[a])
        {
            if(match[a]==-1&&match[b]==-1)
            {
                match[a]=b;
                match[b]=a;
            }
        }
    }
    random_shuffle(g,g+N);
    for(int i=0;i<N;i++)
    {
        int u=g[i];
        if(match[u]==-1)
        {
            DFS(u);
        }
        for(int temp : Sprz)
        {
            zaj[temp]=0;
        }
        Sprz.clear();
    }
}
void Upgrade(int v)
{
    zaj[v]=1;
    Sprz.push_back(v);
    for(int som : D[v])
    {
        if(zaj[match[som]]==0)
        {
            Upgrade(match[som]);
            match[v]=som;
            match[som]=v;
            return;
        }
        else if(match[som]!=v)
        {
            break;
        }
    }
    for(int u : Sprz){zaj[u]=0;}
    Sprz.clear();
    match[v]=-1;
}
void CzySpojna(int v)
{
    zaj[v]=1;
    IleVert++;
    for(auto[som,ind] : Graf[v])
    {
        if(zaj[som]){continue;}
        CzySpojna(som);
    }
}
int construct_roads(vector<int>X, vector<int>Y)
{
    srand(2137);
    n=(int)X.size();
    for(int i=0;i<n;i++)
    {
        M[{X[i],Y[i]}]=i;
    }
    for(int i=0;i<n;i++)
    {
        if(M.find({X[i]-2,Y[i]})!=M.end())
        {
            Graf[i].push_back({M[{X[i]-2,Y[i]}],m});
            Graf[M[{X[i]-2,Y[i]}]].push_back({i,m});
            m++;
        }
        if(M.find({X[i],Y[i]-2})!=M.end())
        {
            Graf[i].push_back({M[{X[i],Y[i]-2}],m});
            Graf[M[{X[i],Y[i]-2}]].push_back({i,m});
            m++;
        }
    }
    CzySpojna(0);
    if(IleVert!=n){return 0;}
    vector<pair<int,int>>E(m);
    for(int i=0;i<n;i++)
    {
        for(auto[som,ind] : Graf[i])
        {
            int a=i,b=som;
            if(pair<int,int>{X[a],Y[a]}>pair<int,int>{X[b],Y[b]}){continue;}
            E[ind]={a,b};
        }
    }
    for(int i=0;i<(int)E.size();i++)
    {
        const int a=E[i].first,b=E[i].second;
        vector<pair<int,int>>Som;
        if(Y[a]+2==Y[b])
        {
            Som.push_back({X[a]-1,Y[a]+1});
            Som.push_back({X[a]+1,Y[a]+1});
        }
        else if(X[a]+2==X[b])
        {
            Som.push_back({X[a]+1,Y[a]+1});
            Som.push_back({X[a]+1,Y[a]-1});
        }
        for(pair<int,int>som : Som)
        {
            if(M2.find(som)==M2.end())
            {
                KimJest[k]=som;
                M2[som]=k++;
            }
            int u=m+M2[som];
            D[i].push_back(u);
            D[u].push_back(i);
        }
    }
    N=m+k;
    for(int i=0;i<N;i++){g[i]=i;}
    SKOJ();
for(int I=1;I<=10;I++)
{
    for(int i=0;i<n;i++)
    {
        f[i]=i;
        ilosc[i]=1;
    }
    for(int i=0;i<n;i++)
    {
        for(auto[som,ind] : Graf[i])
        {
            if(match[ind]==-1){continue;}
            Polacz(i,som);
        }
    }
    vector<int>U;
    for(int i=0;i<n;i++){g[i]=i;}
    random_shuffle(g,g+n);
    for(int i=0;i<n;i++)
    {
        const int u=g[i];
        for(auto[som,ind] : Graf[u])
        {
            if(match[ind]==-1&&F(u)!=F(som))
            {
                U.push_back(ind);
                Polacz(u,som);
            }
        }
    }
    if(ilosc[F(0)]==n)
    {
        vector<int>O1,O2,O3,O4;
        for(int j=0;j<m;j++)
        {
            const int a=E[j].first,b=E[j].second;
            if(match[j]!=-1)
            {
                pair<int,int>xd=KimJest[match[j]-m];
                O1.push_back(a);
                O2.push_back(b);
                O3.push_back(xd.first);
                O4.push_back(xd.second);
            }
        }
        build(O1,O2,O3,O4);
        return 1;
    }
    int xdd=6/0;
    int tempd=E[xdd].first;
    for(int u : U)
    {
        if(match[u]!=-1){continue;}
        Upgrade(u);
    }
}
    return 0;
}

Compilation message

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:227:14: warning: division by zero [-Wdiv-by-zero]
  227 |     int xdd=6/0;
      |             ~^~
parks.cpp:228:9: warning: unused variable 'tempd' [-Wunused-variable]
  228 |     int tempd=E[xdd].first;
      |         ^~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 30044 KB Output is correct
2 Correct 10 ms 30112 KB Output is correct
3 Correct 9 ms 30044 KB Output is correct
4 Correct 9 ms 30044 KB Output is correct
5 Correct 10 ms 30088 KB Output is correct
6 Correct 10 ms 30044 KB Output is correct
7 Correct 10 ms 30044 KB Output is correct
8 Correct 9 ms 30040 KB Output is correct
9 Correct 294 ms 76476 KB Output is correct
10 Correct 27 ms 35160 KB Output is correct
11 Correct 110 ms 55244 KB Output is correct
12 Correct 34 ms 37460 KB Output is correct
13 Correct 35 ms 35920 KB Output is correct
14 Correct 10 ms 30296 KB Output is correct
15 Correct 11 ms 30352 KB Output is correct
16 Correct 302 ms 75196 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 30044 KB Output is correct
2 Correct 10 ms 30112 KB Output is correct
3 Correct 9 ms 30044 KB Output is correct
4 Correct 9 ms 30044 KB Output is correct
5 Correct 10 ms 30088 KB Output is correct
6 Correct 10 ms 30044 KB Output is correct
7 Correct 10 ms 30044 KB Output is correct
8 Correct 9 ms 30040 KB Output is correct
9 Correct 294 ms 76476 KB Output is correct
10 Correct 27 ms 35160 KB Output is correct
11 Correct 110 ms 55244 KB Output is correct
12 Correct 34 ms 37460 KB Output is correct
13 Correct 35 ms 35920 KB Output is correct
14 Correct 10 ms 30296 KB Output is correct
15 Correct 11 ms 30352 KB Output is correct
16 Correct 302 ms 75196 KB Output is correct
17 Correct 10 ms 30040 KB Output is correct
18 Correct 10 ms 30228 KB Output is correct
19 Correct 10 ms 30112 KB Output is correct
20 Correct 9 ms 30268 KB Output is correct
21 Correct 10 ms 30044 KB Output is correct
22 Correct 10 ms 30044 KB Output is correct
23 Correct 996 ms 126696 KB Output is correct
24 Correct 11 ms 30044 KB Output is correct
25 Correct 12 ms 30812 KB Output is correct
26 Correct 12 ms 30696 KB Output is correct
27 Correct 13 ms 30812 KB Output is correct
28 Correct 294 ms 68472 KB Output is correct
29 Correct 478 ms 88396 KB Output is correct
30 Correct 713 ms 107440 KB Output is correct
31 Correct 935 ms 126320 KB Output is correct
32 Correct 10 ms 30040 KB Output is correct
33 Correct 10 ms 30044 KB Output is correct
34 Correct 10 ms 30040 KB Output is correct
35 Correct 10 ms 30040 KB Output is correct
36 Correct 10 ms 30044 KB Output is correct
37 Correct 10 ms 30044 KB Output is correct
38 Correct 11 ms 30044 KB Output is correct
39 Correct 10 ms 30044 KB Output is correct
40 Correct 10 ms 30040 KB Output is correct
41 Correct 10 ms 30040 KB Output is correct
42 Correct 10 ms 30044 KB Output is correct
43 Correct 12 ms 30300 KB Output is correct
44 Correct 12 ms 30556 KB Output is correct
45 Correct 290 ms 69052 KB Output is correct
46 Correct 477 ms 86660 KB Output is correct
47 Correct 459 ms 86444 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 30044 KB Output is correct
2 Correct 10 ms 30112 KB Output is correct
3 Correct 9 ms 30044 KB Output is correct
4 Correct 9 ms 30044 KB Output is correct
5 Correct 10 ms 30088 KB Output is correct
6 Correct 10 ms 30044 KB Output is correct
7 Correct 10 ms 30044 KB Output is correct
8 Correct 9 ms 30040 KB Output is correct
9 Correct 294 ms 76476 KB Output is correct
10 Correct 27 ms 35160 KB Output is correct
11 Correct 110 ms 55244 KB Output is correct
12 Correct 34 ms 37460 KB Output is correct
13 Correct 35 ms 35920 KB Output is correct
14 Correct 10 ms 30296 KB Output is correct
15 Correct 11 ms 30352 KB Output is correct
16 Correct 302 ms 75196 KB Output is correct
17 Correct 10 ms 30040 KB Output is correct
18 Correct 10 ms 30228 KB Output is correct
19 Correct 10 ms 30112 KB Output is correct
20 Correct 9 ms 30268 KB Output is correct
21 Correct 10 ms 30044 KB Output is correct
22 Correct 10 ms 30044 KB Output is correct
23 Correct 996 ms 126696 KB Output is correct
24 Correct 11 ms 30044 KB Output is correct
25 Correct 12 ms 30812 KB Output is correct
26 Correct 12 ms 30696 KB Output is correct
27 Correct 13 ms 30812 KB Output is correct
28 Correct 294 ms 68472 KB Output is correct
29 Correct 478 ms 88396 KB Output is correct
30 Correct 713 ms 107440 KB Output is correct
31 Correct 935 ms 126320 KB Output is correct
32 Correct 10 ms 30040 KB Output is correct
33 Correct 10 ms 30044 KB Output is correct
34 Correct 10 ms 30040 KB Output is correct
35 Correct 10 ms 30040 KB Output is correct
36 Correct 10 ms 30044 KB Output is correct
37 Correct 10 ms 30044 KB Output is correct
38 Correct 11 ms 30044 KB Output is correct
39 Correct 10 ms 30044 KB Output is correct
40 Correct 10 ms 30040 KB Output is correct
41 Correct 10 ms 30040 KB Output is correct
42 Correct 10 ms 30044 KB Output is correct
43 Correct 12 ms 30300 KB Output is correct
44 Correct 12 ms 30556 KB Output is correct
45 Correct 290 ms 69052 KB Output is correct
46 Correct 477 ms 86660 KB Output is correct
47 Correct 459 ms 86444 KB Output is correct
48 Correct 11 ms 30044 KB Output is correct
49 Correct 10 ms 30044 KB Output is correct
50 Correct 11 ms 30248 KB Output is correct
51 Correct 10 ms 30040 KB Output is correct
52 Correct 10 ms 30044 KB Output is correct
53 Correct 10 ms 30044 KB Output is correct
54 Correct 10 ms 30132 KB Output is correct
55 Incorrect 969 ms 118676 KB Given structure is not connected: There is no path between vertices 0 and 3236
56 Halted 0 ms 0 KB -

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 30044 KB Output is correct
2 Correct 10 ms 30112 KB Output is correct
3 Correct 9 ms 30044 KB Output is correct
4 Correct 9 ms 30044 KB Output is correct
5 Correct 10 ms 30088 KB Output is correct
6 Correct 10 ms 30044 KB Output is correct
7 Correct 10 ms 30044 KB Output is correct
8 Correct 9 ms 30040 KB Output is correct
9 Correct 294 ms 76476 KB Output is correct
10 Correct 27 ms 35160 KB Output is correct
11 Correct 110 ms 55244 KB Output is correct
12 Correct 34 ms 37460 KB Output is correct
13 Correct 35 ms 35920 KB Output is correct
14 Correct 10 ms 30296 KB Output is correct
15 Correct 11 ms 30352 KB Output is correct
16 Correct 302 ms 75196 KB Output is correct
17 Correct 11 ms 30040 KB Output is correct
18 Correct 11 ms 30040 KB Output is correct
19 Correct 11 ms 30044 KB Output is correct
20 Correct 642 ms 107840 KB Output is correct
21 Correct 708 ms 101440 KB Output is correct
22 Correct 627 ms 100932 KB Output is correct
23 Correct 585 ms 107432 KB Output is correct
24 Correct 174 ms 45904 KB Output is correct
25 Correct 290 ms 52308 KB Output is correct
26 Correct 264 ms 52304 KB Output is correct
27 Correct 757 ms 116908 KB Output is correct
28 Correct 708 ms 116908 KB Output is correct
29 Correct 696 ms 116904 KB Output is correct
30 Correct 692 ms 116908 KB Output is correct
31 Correct 10 ms 30184 KB Output is correct
32 Correct 39 ms 35728 KB Output is correct
33 Correct 80 ms 38068 KB Output is correct
34 Correct 714 ms 106312 KB Output is correct
35 Correct 18 ms 31320 KB Output is correct
36 Correct 69 ms 35876 KB Output is correct
37 Correct 130 ms 41556 KB Output is correct
38 Correct 230 ms 58236 KB Output is correct
39 Correct 343 ms 68544 KB Output is correct
40 Correct 426 ms 78880 KB Output is correct
41 Correct 552 ms 89468 KB Output is correct
42 Correct 660 ms 99916 KB Output is correct
43 Correct 9 ms 30044 KB Output is correct
44 Correct 9 ms 30096 KB Output is correct
45 Correct 9 ms 30044 KB Output is correct
46 Correct 8 ms 30044 KB Output is correct
47 Correct 8 ms 30104 KB Output is correct
48 Correct 9 ms 30140 KB Output is correct
49 Correct 9 ms 30076 KB Output is correct
50 Correct 8 ms 30044 KB Output is correct
51 Correct 9 ms 30200 KB Output is correct
52 Correct 9 ms 30044 KB Output is correct
53 Correct 8 ms 30040 KB Output is correct
54 Correct 12 ms 30324 KB Output is correct
55 Correct 11 ms 30552 KB Output is correct
56 Correct 283 ms 68904 KB Output is correct
57 Correct 448 ms 86840 KB Output is correct
58 Correct 422 ms 86436 KB Output is correct
59 Correct 9 ms 30040 KB Output is correct
60 Correct 8 ms 30044 KB Output is correct
61 Correct 9 ms 30044 KB Output is correct
62 Correct 674 ms 121360 KB Output is correct
63 Correct 678 ms 121636 KB Output is correct
64 Correct 677 ms 121896 KB Output is correct
65 Correct 11 ms 30556 KB Output is correct
66 Correct 15 ms 31144 KB Output is correct
67 Correct 289 ms 67644 KB Output is correct
68 Correct 459 ms 86952 KB Output is correct
69 Correct 682 ms 105128 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 30044 KB Output is correct
2 Correct 10 ms 30112 KB Output is correct
3 Correct 9 ms 30044 KB Output is correct
4 Correct 9 ms 30044 KB Output is correct
5 Correct 10 ms 30088 KB Output is correct
6 Correct 10 ms 30044 KB Output is correct
7 Correct 10 ms 30044 KB Output is correct
8 Correct 9 ms 30040 KB Output is correct
9 Correct 294 ms 76476 KB Output is correct
10 Correct 27 ms 35160 KB Output is correct
11 Correct 110 ms 55244 KB Output is correct
12 Correct 34 ms 37460 KB Output is correct
13 Correct 35 ms 35920 KB Output is correct
14 Correct 10 ms 30296 KB Output is correct
15 Correct 11 ms 30352 KB Output is correct
16 Correct 302 ms 75196 KB Output is correct
17 Correct 703 ms 123304 KB Output is correct
18 Correct 689 ms 122676 KB Output is correct
19 Correct 682 ms 101460 KB Output is correct
20 Correct 817 ms 110272 KB Output is correct
21 Correct 649 ms 105796 KB Output is correct
22 Correct 8 ms 30040 KB Output is correct
23 Correct 85 ms 41928 KB Output is correct
24 Correct 27 ms 32604 KB Output is correct
25 Correct 88 ms 38736 KB Output is correct
26 Correct 160 ms 44624 KB Output is correct
27 Correct 332 ms 69564 KB Output is correct
28 Correct 408 ms 79416 KB Output is correct
29 Correct 564 ms 88968 KB Output is correct
30 Correct 675 ms 98824 KB Output is correct
31 Correct 822 ms 108716 KB Output is correct
32 Correct 780 ms 116912 KB Output is correct
33 Correct 664 ms 123304 KB Output is correct
34 Correct 12 ms 30812 KB Output is correct
35 Correct 16 ms 31320 KB Output is correct
36 Correct 302 ms 70332 KB Output is correct
37 Correct 501 ms 90652 KB Output is correct
38 Correct 754 ms 110392 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 30044 KB Output is correct
2 Correct 10 ms 30112 KB Output is correct
3 Correct 9 ms 30044 KB Output is correct
4 Correct 9 ms 30044 KB Output is correct
5 Correct 10 ms 30088 KB Output is correct
6 Correct 10 ms 30044 KB Output is correct
7 Correct 10 ms 30044 KB Output is correct
8 Correct 9 ms 30040 KB Output is correct
9 Correct 294 ms 76476 KB Output is correct
10 Correct 27 ms 35160 KB Output is correct
11 Correct 110 ms 55244 KB Output is correct
12 Correct 34 ms 37460 KB Output is correct
13 Correct 35 ms 35920 KB Output is correct
14 Correct 10 ms 30296 KB Output is correct
15 Correct 11 ms 30352 KB Output is correct
16 Correct 302 ms 75196 KB Output is correct
17 Correct 10 ms 30040 KB Output is correct
18 Correct 10 ms 30228 KB Output is correct
19 Correct 10 ms 30112 KB Output is correct
20 Correct 9 ms 30268 KB Output is correct
21 Correct 10 ms 30044 KB Output is correct
22 Correct 10 ms 30044 KB Output is correct
23 Correct 996 ms 126696 KB Output is correct
24 Correct 11 ms 30044 KB Output is correct
25 Correct 12 ms 30812 KB Output is correct
26 Correct 12 ms 30696 KB Output is correct
27 Correct 13 ms 30812 KB Output is correct
28 Correct 294 ms 68472 KB Output is correct
29 Correct 478 ms 88396 KB Output is correct
30 Correct 713 ms 107440 KB Output is correct
31 Correct 935 ms 126320 KB Output is correct
32 Correct 10 ms 30040 KB Output is correct
33 Correct 10 ms 30044 KB Output is correct
34 Correct 10 ms 30040 KB Output is correct
35 Correct 10 ms 30040 KB Output is correct
36 Correct 10 ms 30044 KB Output is correct
37 Correct 10 ms 30044 KB Output is correct
38 Correct 11 ms 30044 KB Output is correct
39 Correct 10 ms 30044 KB Output is correct
40 Correct 10 ms 30040 KB Output is correct
41 Correct 10 ms 30040 KB Output is correct
42 Correct 10 ms 30044 KB Output is correct
43 Correct 12 ms 30300 KB Output is correct
44 Correct 12 ms 30556 KB Output is correct
45 Correct 290 ms 69052 KB Output is correct
46 Correct 477 ms 86660 KB Output is correct
47 Correct 459 ms 86444 KB Output is correct
48 Correct 11 ms 30044 KB Output is correct
49 Correct 10 ms 30044 KB Output is correct
50 Correct 11 ms 30248 KB Output is correct
51 Correct 10 ms 30040 KB Output is correct
52 Correct 10 ms 30044 KB Output is correct
53 Correct 10 ms 30044 KB Output is correct
54 Correct 10 ms 30132 KB Output is correct
55 Incorrect 969 ms 118676 KB Given structure is not connected: There is no path between vertices 0 and 3236
56 Halted 0 ms 0 KB -