oj.uz

Submission #732257

# Submission time Handle Problem Language Result Execution time Memory
732257 2023-04-28T20:57:30 Z vjudge1 Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 197 ms 24168 KB 
#include <bits/stdc++.h>
#include "supertrees.h"

/*
    author: aykhn
    4/28/2023
*/

using namespace std;

typedef long long ll;

#define OPT ios_base::sync_with_stdio(0); \
            cin.tie(0); \
            cout.tie(0)
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pss pair<long,long>
#define all(v) v.begin(), v.end()
#define mpr make_pair
#define pb push_back
#define ts to_string
#define fi first
#define se second
#define inf 0x3F3F3F3F
#define infll 0x3F3F3F3F3F3F3F3FLL
#define bpc __builtin_popcount
#define print(v) for(int i = 0; i < v.size(); i++) cout << v[i] << " "; cout<<endl;

struct DSU
{
    vector<int> par;
    vector<vector<int>> e;

    void init(int n)
    {
        e.resize(n);
        par.resize(n);
        for (int i = 0; i < n; i++)
        {
            e[i].pb(i);
            par[i] = i;
        }
    }

    int get(int x)
    {
        if (par[x] == x) return x;
        return par[x] = get(par[x]);
    }

    bool tog(int x, int y)
    {
        return get(x) == get(y);
    }

    void unite(int x, int y)
    {
        x = get(x);
        y = get(y);

        if (x == y) return;

        if (e[x].size() < e[y].size()) swap(x, y);

        for (int a : e[y])
        {
            e[x].pb(a);
            par[a] = x;
        }

        par[y] = x;

        e[y].clear();
    }
};

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

    vector<vector<int>> b(n, vector<int> (n, 0));
    vector<int> used(n, 0);

    DSU dsu;
    dsu.init(n);

    bool flag = false;

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            if (p[i][j]) dsu.unite(i, j);
            if (p[i][j] == 2) flag = true;
        }
    }

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            if (!p[i][j] && dsu.tog(i, j)) return 0;
        }
    }

    for (int i = 0; i < n; i++)
    {
        int x = dsu.get(i);
        if (!used[x])
        {
            if (flag && dsu.e[x].size() == 2) return 0;

            for (int j = 0; j + 1 < dsu.e[x].size(); j++)
            {
                b[dsu.e[x][j]][dsu.e[x][j + 1]] = 1;
                b[dsu.e[x][j + 1]][dsu.e[x][j]] = 1;
            }
            if(flag)
            {
                b[dsu.e[x][dsu.e[x].size() - 1]][dsu.e[x][0]] = 1;
                b[dsu.e[x][0]][dsu.e[x][dsu.e[x].size() - 1]] = 1;
            }
        }
    }
    for (int i = 0; i < n; i++) b[i][i] = 0;
    build(b);

    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:114:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  114 |             for (int j = 0; j + 1 < dsu.e[x].size(); j++)
      |                             ~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 10 ms 1216 KB Output is correct
7 Correct 185 ms 24048 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 10 ms 1216 KB Output is correct
7 Correct 185 ms 24048 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 244 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 168 ms 24064 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 88 ms 14120 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 49 ms 6260 KB Output is correct
21 Correct 177 ms 24048 KB Output is correct
22 Correct 172 ms 23944 KB Output is correct
23 Correct 193 ms 23956 KB Output is correct
24 Correct 169 ms 23964 KB Output is correct
25 Correct 70 ms 14068 KB Output is correct
26 Correct 66 ms 14064 KB Output is correct
27 Correct 192 ms 24052 KB Output is correct
28 Correct 175 ms 24052 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 7 ms 1236 KB Output is correct
9 Correct 168 ms 24052 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1204 KB Output is correct
13 Correct 181 ms 24052 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 89 ms 14076 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 49 ms 6224 KB Output is correct
22 Correct 179 ms 24064 KB Output is correct
23 Correct 171 ms 23968 KB Output is correct
24 Correct 192 ms 24168 KB Output is correct
25 Correct 72 ms 14200 KB Output is correct
26 Correct 70 ms 14068 KB Output is correct
27 Correct 172 ms 24008 KB Output is correct
28 Correct 189 ms 24048 KB Output is correct
29 Correct 72 ms 14064 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 44 ms 6260 KB Output is correct
5 Correct 175 ms 24052 KB Output is correct
6 Correct 170 ms 24052 KB Output is correct
7 Correct 189 ms 24052 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 47 ms 6220 KB Output is correct
10 Correct 197 ms 24056 KB Output is correct
11 Correct 179 ms 24060 KB Output is correct
12 Correct 187 ms 24060 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Incorrect 1 ms 212 KB Too many ways to get from 4 to 8, should be 1 found no less than 2
15 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 10 ms 1216 KB Output is correct
7 Correct 185 ms 24048 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 244 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 168 ms 24064 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 88 ms 14120 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 49 ms 6260 KB Output is correct
21 Correct 177 ms 24048 KB Output is correct
22 Correct 172 ms 23944 KB Output is correct
23 Correct 193 ms 23956 KB Output is correct
24 Correct 169 ms 23964 KB Output is correct
25 Correct 70 ms 14068 KB Output is correct
26 Correct 66 ms 14064 KB Output is correct
27 Correct 192 ms 24052 KB Output is correct
28 Correct 175 ms 24052 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 296 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 300 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 168 ms 24052 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 9 ms 1204 KB Output is correct
41 Correct 181 ms 24052 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 89 ms 14076 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 49 ms 6224 KB Output is correct
50 Correct 179 ms 24064 KB Output is correct
51 Correct 171 ms 23968 KB Output is correct
52 Correct 192 ms 24168 KB Output is correct
53 Correct 72 ms 14200 KB Output is correct
54 Correct 70 ms 14068 KB Output is correct
55 Correct 172 ms 24008 KB Output is correct
56 Correct 189 ms 24048 KB Output is correct
57 Correct 72 ms 14064 KB Output is correct
58 Correct 1 ms 296 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 83 ms 14120 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Incorrect 1 ms 212 KB Too many ways to get from 0 to 9, should be 1 found no less than 2
64 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 10 ms 1216 KB Output is correct
7 Correct 185 ms 24048 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 244 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 168 ms 24064 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 88 ms 14120 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 49 ms 6260 KB Output is correct
21 Correct 177 ms 24048 KB Output is correct
22 Correct 172 ms 23944 KB Output is correct
23 Correct 193 ms 23956 KB Output is correct
24 Correct 169 ms 23964 KB Output is correct
25 Correct 70 ms 14068 KB Output is correct
26 Correct 66 ms 14064 KB Output is correct
27 Correct 192 ms 24052 KB Output is correct
28 Correct 175 ms 24052 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 296 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 300 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 168 ms 24052 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 9 ms 1204 KB Output is correct
41 Correct 181 ms 24052 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 89 ms 14076 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 49 ms 6224 KB Output is correct
50 Correct 179 ms 24064 KB Output is correct
51 Correct 171 ms 23968 KB Output is correct
52 Correct 192 ms 24168 KB Output is correct
53 Correct 72 ms 14200 KB Output is correct
54 Correct 70 ms 14068 KB Output is correct
55 Correct 172 ms 24008 KB Output is correct
56 Correct 189 ms 24048 KB Output is correct
57 Correct 72 ms 14064 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 44 ms 6260 KB Output is correct
62 Correct 175 ms 24052 KB Output is correct
63 Correct 170 ms 24052 KB Output is correct
64 Correct 189 ms 24052 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 47 ms 6220 KB Output is correct
67 Correct 197 ms 24056 KB Output is correct
68 Correct 179 ms 24060 KB Output is correct
69 Correct 187 ms 24060 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Incorrect 1 ms 212 KB Too many ways to get from 4 to 8, should be 1 found no less than 2
72 Halted 0 ms 0 KB -