oj.uz

Submission #853923

# Submission time Handle Problem Language Result Execution time Memory
853923 2023-09-25T13:57:49 Z hngwlog Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 176 ms 28276 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;

#define fi first
#define se second
#define _size(x) (int)x.size()
#define BIT(i, x) ((x >> i) & 1)
#define MASK(n) ((1 << n) - 1)
#define REP(i, n) for (int i = 0, _n = (n); i < _n; i++)
#define FOR(i, a, b) for (int i = a, _b = (b); i <= _b; i++)
#define FORD(i, a, b) for (int i = a, _b = (b); i >= _b; i--)
#define FORB1(i, mask) for (int i = mask; i > 0; i ^= i & - i)
#define FORB0(i, n, mask) for (int i = ((1 << n) - 1) ^ mask; i > 0; i ^= i & - i)
#define FORALL(i, a) for (auto i: a)
#define fastio ios_base::sync_with_stdio(0); cin.tie(0);

vector<int> root;

int getroot(int u) {

    return root[u] == u ? u : (root[u] = getroot(root[u]));
}

bool unite(int u, int v) {

    u = getroot(u), v = getroot(v);
    if (u == v) return false;
    root[v] = u;
    return true;
}

int construct(vector<vector<int>> p) {

    int n = _size(p);
    root.resize(n);
    REP(i, n) root[i] = i;
    REP(i, n) REP(j, n) {
        if (i == j) {
            if (p[i][j] != 1) return 0;
            continue;
        }
        if (p[i][j] == 1) unite(i, j);
        if (p[i][j] > 2) return 0;
    }
    vector<vector<int>> adj(n);
    REP(i, n) adj[getroot(i)].push_back(i);
    vector<int> used(n);
    vector<pair<int, int>> ans;
    vector<vector<int>> cnt(n, vector<int>(n));
    REP(i, n) {
        if (!_size(adj[i]) || used[i]) continue;
        FORALL(u, adj[i]) used[u]++;
        FORALL(u, adj[i]) FORALL(v, adj[i]) cnt[u][v] = 1;
        REP(j, _size(adj[i]) - 1) ans.push_back({adj[i][j], adj[i][j + 1]});
        vector<int> g;
        g.push_back(i);
        REP(j, n) if (p[i][j] == 2) {
            used[j]++;
            g.push_back(j);
        }
        if (_size(g) == 1) continue;
        if (_size(g) == 2) return 0;
        FORALL(u, g) FORALL(v, g) if (u != v) cnt[u][v] = 2; else cnt[u][v] = 1;
        FORALL(u, g) FORALL(v, adj[i]) {
            if (u == i || v == i) continue;
            cnt[u][v] = cnt[v][u] = 2;
        }
        REP(j, _size(g) - 1) ans.push_back({g[j], g[j + 1]});
        ans.push_back({g[0], g.back()});
    }
    REP(i, n) cnt[i][i] = 1;
    REP(i, n) REP(j, n) if (cnt[i][j] != p[i][j]) return 0;
    vector<vector<int>> b(n, vector<int>(n));
    FORALL(e, ans) b[e.fi][e.se] = b[e.se][e.fi] = 1;
    build(b);
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1568 KB Output is correct
7 Correct 151 ms 28072 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1568 KB Output is correct
7 Correct 151 ms 28072 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1368 KB Output is correct
13 Correct 148 ms 27984 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 69 ms 14160 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 41 ms 7268 KB Output is correct
21 Correct 148 ms 28276 KB Output is correct
22 Correct 152 ms 28172 KB Output is correct
23 Correct 154 ms 28112 KB Output is correct
24 Correct 176 ms 28024 KB Output is correct
25 Correct 60 ms 14160 KB Output is correct
26 Correct 58 ms 14172 KB Output is correct
27 Correct 153 ms 27984 KB Output is correct
28 Correct 149 ms 27996 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 6 ms 1368 KB Output is correct
9 Correct 145 ms 28240 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 6 ms 1368 KB Output is correct
13 Correct 149 ms 27984 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 65 ms 14164 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 37 ms 7252 KB Output is correct
22 Correct 146 ms 27984 KB Output is correct
23 Correct 145 ms 28168 KB Output is correct
24 Correct 156 ms 28240 KB Output is correct
25 Correct 58 ms 14164 KB Output is correct
26 Correct 59 ms 14160 KB Output is correct
27 Correct 151 ms 28024 KB Output is correct
28 Correct 151 ms 28040 KB Output is correct
29 Correct 59 ms 14160 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 39 ms 7272 KB Output is correct
5 Correct 149 ms 27984 KB Output is correct
6 Correct 161 ms 28096 KB Output is correct
7 Correct 154 ms 27984 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 37 ms 7420 KB Output is correct
10 Correct 145 ms 27984 KB Output is correct
11 Correct 146 ms 27984 KB Output is correct
12 Correct 154 ms 28156 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Incorrect 15 ms 3772 KB Answer gives possible 0 while actual possible 1
17 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1568 KB Output is correct
7 Correct 151 ms 28072 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1368 KB Output is correct
13 Correct 148 ms 27984 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 69 ms 14160 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 41 ms 7268 KB Output is correct
21 Correct 148 ms 28276 KB Output is correct
22 Correct 152 ms 28172 KB Output is correct
23 Correct 154 ms 28112 KB Output is correct
24 Correct 176 ms 28024 KB Output is correct
25 Correct 60 ms 14160 KB Output is correct
26 Correct 58 ms 14172 KB Output is correct
27 Correct 153 ms 27984 KB Output is correct
28 Correct 149 ms 27996 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 6 ms 1368 KB Output is correct
37 Correct 145 ms 28240 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 6 ms 1368 KB Output is correct
41 Correct 149 ms 27984 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 3 ms 856 KB Output is correct
45 Correct 65 ms 14164 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 37 ms 7252 KB Output is correct
50 Correct 146 ms 27984 KB Output is correct
51 Correct 145 ms 28168 KB Output is correct
52 Correct 156 ms 28240 KB Output is correct
53 Correct 58 ms 14164 KB Output is correct
54 Correct 59 ms 14160 KB Output is correct
55 Correct 151 ms 28024 KB Output is correct
56 Correct 151 ms 28040 KB Output is correct
57 Correct 59 ms 14160 KB Output is correct
58 Correct 1 ms 344 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 3 ms 856 KB Output is correct
61 Correct 67 ms 14160 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 1 ms 344 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Incorrect 17 ms 3932 KB Answer gives possible 0 while actual possible 1
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 7 ms 1568 KB Output is correct
7 Correct 151 ms 28072 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1368 KB Output is correct
13 Correct 148 ms 27984 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 69 ms 14160 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 41 ms 7268 KB Output is correct
21 Correct 148 ms 28276 KB Output is correct
22 Correct 152 ms 28172 KB Output is correct
23 Correct 154 ms 28112 KB Output is correct
24 Correct 176 ms 28024 KB Output is correct
25 Correct 60 ms 14160 KB Output is correct
26 Correct 58 ms 14172 KB Output is correct
27 Correct 153 ms 27984 KB Output is correct
28 Correct 149 ms 27996 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 6 ms 1368 KB Output is correct
37 Correct 145 ms 28240 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 6 ms 1368 KB Output is correct
41 Correct 149 ms 27984 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 3 ms 856 KB Output is correct
45 Correct 65 ms 14164 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 344 KB Output is correct
49 Correct 37 ms 7252 KB Output is correct
50 Correct 146 ms 27984 KB Output is correct
51 Correct 145 ms 28168 KB Output is correct
52 Correct 156 ms 28240 KB Output is correct
53 Correct 58 ms 14164 KB Output is correct
54 Correct 59 ms 14160 KB Output is correct
55 Correct 151 ms 28024 KB Output is correct
56 Correct 151 ms 28040 KB Output is correct
57 Correct 59 ms 14160 KB Output is correct
58 Correct 1 ms 344 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 0 ms 344 KB Output is correct
61 Correct 39 ms 7272 KB Output is correct
62 Correct 149 ms 27984 KB Output is correct
63 Correct 161 ms 28096 KB Output is correct
64 Correct 154 ms 27984 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 37 ms 7420 KB Output is correct
67 Correct 145 ms 27984 KB Output is correct
68 Correct 146 ms 27984 KB Output is correct
69 Correct 154 ms 28156 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 1 ms 344 KB Output is correct
72 Correct 0 ms 344 KB Output is correct
73 Incorrect 15 ms 3772 KB Answer gives possible 0 while actual possible 1
74 Halted 0 ms 0 KB -