oj.uz

Submission #527865

# Submission time Handle Problem Language Result Execution time Memory
527865 2022-02-18T14:16:50 Z Servus2022 Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 203 ms 29008 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

const int NMAX = 1e3 + 1;

int N;
int P[NMAX][NMAX];

int head[NMAX];

bool Edge[NMAX][NMAX];

vector < int > roots;

vector < int > List[NMAX];

bool OK = 1;

class DisjointSets
{
    int T[NMAX], Size[NMAX];

private:
    inline int Find (int X)
    {
        if(X == T[X])
            return X;

        return (T[X] = Find(T[X]));
    }

    inline void my_swap (int &x, int &y)
    {
        x = (x ^ y), y = (x ^ y), x = (x ^ y);

        return;
    }

public:
    inline void Initialize (int N)
    {
        for(int i = 1; i <= N; ++i)
            T[i] = i, Size[i] = 1;

        return;
    }

    inline bool Unify (int X, int Y)
    {
        X = Find(X), Y = Find(Y);

        if(X == Y)
            return 0;

        if(Size[X] < Size[Y])
            my_swap(X, Y);

        Size[X] += Size[Y], Size[Y] = 0;
        T[Y] = X;

        return 1;
    }

    inline int Who_is_the_boss (int Node)
    {
        return Find(Node);
    }
} DSU, cycles;

void Build_type_1 ()
{
    DSU.Initialize(N);

    for(int i = 1; i <= N; ++i)
        for(int j = 1; j <= N; ++j)
            if(P[i][j] == 1)
                DSU.Unify(i, j);

    for(int i = 1; i <= N; ++i)
    {
        head[i] = DSU.Who_is_the_boss(i);

        if(i == head[i])
            roots.push_back(i);
        else
            Edge[i][head[i]] = Edge[head[i]][i] = 1;
    }

    return;
}

void Build_type_2 ()
{
    cycles.Initialize(N);

    for(int i = 0; i < (int)roots.size() - 1; ++i)
        for(int j = i + 1; j < (int)roots.size(); ++j)
            if(P[roots[i]][roots[j]] == 2)
                cycles.Unify(roots[i], roots[j]);

    for(auto it : roots)
    {
        int rep = cycles.Who_is_the_boss(it);

        List[rep].push_back(it);
    }

    for(int i = 1; i <= N; ++i)
        if((int)List[i].size() > 2)
        {
            for(int j = 0; j < (int)List[i].size() - 1; ++j)
                Edge[List[i][j]][List[i][j + 1]] = Edge[List[i][j + 1]][List[i][j]] = 1;

            for(int j = 0; j < (int)List[i].size() - 1; ++j)
                for(int k = j + 1; k < (int)List[i].size(); ++k)
                    if(P[List[i][j]][List[i][k]] != 2)
                        OK = 0;

            int First = List[i][0];
            int Last = List[i][(int)List[i].size() - 1];

            Edge[First][Last] = Edge[Last][First] = 1;
        }
        else if((int)List[i].size() == 2)
            OK = 0;

    return;
}

int construct (vector < vector < int > > p)
{
    N = (int)p.size();

    for(int i = 0; i < N; ++i)
        for(int j = 0; j < N; ++j)
        {
            P[i + 1][j + 1] = p[i][j];

            if(p[i][j] == 3)
                return 0;
        }

    Build_type_1();

    for(int i = 1; i <= N; ++i)
        for(int j = 1; j <= N; ++j)
            if(P[i][j] == 0)
                if(head[i] == head[j])
                    return 0;

    Build_type_2();

    if(!OK)
        return 0;

    ///
    vector < vector < int > > ans;
    for(int i = 0; i < N; ++i)
    {
        vector < int > _temp;

        for(int j = 0; j < N; ++j)
            if(Edge[i + 1][j + 1])
                _temp.push_back(1);
            else
                _temp.push_back(0);
        ans.push_back(_temp);
    }
    build(ans);
    ///

    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 8 ms 2152 KB Output is correct
7 Correct 172 ms 27040 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 8 ms 2152 KB Output is correct
7 Correct 172 ms 27040 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 7 ms 1996 KB Output is correct
13 Correct 176 ms 26008 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1612 KB Output is correct
17 Correct 82 ms 13096 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 44 ms 8260 KB Output is correct
21 Correct 190 ms 26908 KB Output is correct
22 Correct 168 ms 26908 KB Output is correct
23 Correct 194 ms 26948 KB Output is correct
24 Correct 176 ms 26180 KB Output is correct
25 Correct 69 ms 13084 KB Output is correct
26 Correct 69 ms 13092 KB Output is correct
27 Correct 180 ms 26948 KB Output is correct
28 Correct 172 ms 26180 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 8 ms 1996 KB Output is correct
9 Correct 169 ms 26020 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 2124 KB Output is correct
13 Correct 203 ms 26888 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 5 ms 1620 KB Output is correct
17 Correct 93 ms 15120 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 47 ms 8744 KB Output is correct
22 Correct 172 ms 28948 KB Output is correct
23 Correct 179 ms 28956 KB Output is correct
24 Correct 184 ms 28964 KB Output is correct
25 Correct 69 ms 14236 KB Output is correct
26 Correct 74 ms 14988 KB Output is correct
27 Correct 174 ms 29008 KB Output is correct
28 Correct 203 ms 28956 KB Output is correct
29 Correct 70 ms 14276 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 45 ms 8228 KB Output is correct
5 Correct 173 ms 26948 KB Output is correct
6 Correct 179 ms 26908 KB Output is correct
7 Correct 188 ms 26912 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 46 ms 8168 KB Output is correct
10 Correct 173 ms 26908 KB Output is correct
11 Correct 167 ms 26928 KB Output is correct
12 Correct 181 ms 26924 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 44 ms 8224 KB Output is correct
17 Correct 171 ms 26904 KB Output is correct
18 Correct 190 ms 26908 KB Output is correct
19 Correct 169 ms 26924 KB Output is correct
20 Correct 177 ms 26228 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 8 ms 2152 KB Output is correct
7 Correct 172 ms 27040 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 7 ms 1996 KB Output is correct
13 Correct 176 ms 26008 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1612 KB Output is correct
17 Correct 82 ms 13096 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 44 ms 8260 KB Output is correct
21 Correct 190 ms 26908 KB Output is correct
22 Correct 168 ms 26908 KB Output is correct
23 Correct 194 ms 26948 KB Output is correct
24 Correct 176 ms 26180 KB Output is correct
25 Correct 69 ms 13084 KB Output is correct
26 Correct 69 ms 13092 KB Output is correct
27 Correct 180 ms 26948 KB Output is correct
28 Correct 172 ms 26180 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 332 KB Output is correct
36 Correct 8 ms 1996 KB Output is correct
37 Correct 169 ms 26020 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 8 ms 2124 KB Output is correct
41 Correct 203 ms 26888 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 1 ms 324 KB Output is correct
44 Correct 5 ms 1620 KB Output is correct
45 Correct 93 ms 15120 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 47 ms 8744 KB Output is correct
50 Correct 172 ms 28948 KB Output is correct
51 Correct 179 ms 28956 KB Output is correct
52 Correct 184 ms 28964 KB Output is correct
53 Correct 69 ms 14236 KB Output is correct
54 Correct 74 ms 14988 KB Output is correct
55 Correct 174 ms 29008 KB Output is correct
56 Correct 203 ms 28956 KB Output is correct
57 Correct 70 ms 14276 KB Output is correct
58 Correct 0 ms 316 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 4 ms 1620 KB Output is correct
61 Correct 78 ms 14988 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 51 ms 8720 KB Output is correct
66 Correct 80 ms 15044 KB Output is correct
67 Correct 68 ms 14992 KB Output is correct
68 Correct 70 ms 14992 KB Output is correct
69 Correct 71 ms 14224 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 8 ms 2152 KB Output is correct
7 Correct 172 ms 27040 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 7 ms 1996 KB Output is correct
13 Correct 176 ms 26008 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1612 KB Output is correct
17 Correct 82 ms 13096 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 44 ms 8260 KB Output is correct
21 Correct 190 ms 26908 KB Output is correct
22 Correct 168 ms 26908 KB Output is correct
23 Correct 194 ms 26948 KB Output is correct
24 Correct 176 ms 26180 KB Output is correct
25 Correct 69 ms 13084 KB Output is correct
26 Correct 69 ms 13092 KB Output is correct
27 Correct 180 ms 26948 KB Output is correct
28 Correct 172 ms 26180 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 332 KB Output is correct
36 Correct 8 ms 1996 KB Output is correct
37 Correct 169 ms 26020 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 8 ms 2124 KB Output is correct
41 Correct 203 ms 26888 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 1 ms 324 KB Output is correct
44 Correct 5 ms 1620 KB Output is correct
45 Correct 93 ms 15120 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 47 ms 8744 KB Output is correct
50 Correct 172 ms 28948 KB Output is correct
51 Correct 179 ms 28956 KB Output is correct
52 Correct 184 ms 28964 KB Output is correct
53 Correct 69 ms 14236 KB Output is correct
54 Correct 74 ms 14988 KB Output is correct
55 Correct 174 ms 29008 KB Output is correct
56 Correct 203 ms 28956 KB Output is correct
57 Correct 70 ms 14276 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 45 ms 8228 KB Output is correct
62 Correct 173 ms 26948 KB Output is correct
63 Correct 179 ms 26908 KB Output is correct
64 Correct 188 ms 26912 KB Output is correct
65 Correct 0 ms 332 KB Output is correct
66 Correct 46 ms 8168 KB Output is correct
67 Correct 173 ms 26908 KB Output is correct
68 Correct 167 ms 26928 KB Output is correct
69 Correct 181 ms 26924 KB Output is correct
70 Correct 0 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 0 ms 332 KB Output is correct
73 Correct 44 ms 8224 KB Output is correct
74 Correct 171 ms 26904 KB Output is correct
75 Correct 190 ms 26908 KB Output is correct
76 Correct 169 ms 26924 KB Output is correct
77 Correct 177 ms 26228 KB Output is correct
78 Correct 0 ms 316 KB Output is correct
79 Correct 0 ms 332 KB Output is correct
80 Correct 4 ms 1620 KB Output is correct
81 Correct 78 ms 14988 KB Output is correct
82 Correct 0 ms 332 KB Output is correct
83 Correct 1 ms 332 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 51 ms 8720 KB Output is correct
86 Correct 80 ms 15044 KB Output is correct
87 Correct 68 ms 14992 KB Output is correct
88 Correct 70 ms 14992 KB Output is correct
89 Correct 71 ms 14224 KB Output is correct
90 Correct 1 ms 332 KB Output is correct
91 Correct 0 ms 332 KB Output is correct
92 Correct 3 ms 724 KB Output is correct
93 Correct 72 ms 10136 KB Output is correct
94 Correct 0 ms 332 KB Output is correct
95 Correct 1 ms 384 KB Output is correct
96 Correct 1 ms 328 KB Output is correct
97 Correct 16 ms 2840 KB Output is correct
98 Correct 65 ms 10264 KB Output is correct
99 Correct 68 ms 10692 KB Output is correct
100 Correct 68 ms 10384 KB Output is correct
101 Correct 88 ms 11408 KB Output is correct
102 Correct 66 ms 10128 KB Output is correct
103 Correct 64 ms 10128 KB Output is correct
104 Correct 71 ms 10056 KB Output is correct
105 Correct 79 ms 10140 KB Output is correct