oj.uz

Submission #854045

# Submission time Handle Problem Language Result Execution time Memory
854045 2023-09-26T00:48:12 Z hngwlog Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 173 ms 28224 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;
    vector<pair<int, int>> ans;
    REP(i, n) REP(j, n) {
        if (i == j) {
            if (p[i][j] != 1) return 0;
            continue;
        }
        if (p[i][j] == 1) if (unite(i, j)) ans.push_back({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<vector<int>> cnt(n, vector<int>(n));
    REP(i, n) {
        FORALL(u, adj[i]) FORALL(v, adj[i]) cnt[u][v] = 1;
        if (!_size(adj[i]) || used[i]) continue;
        vector<int> g;
        REP(j, n) if (p[i][j] == 2) g.push_back(getroot(j));
        sort(g.begin(), g.end());
        g.resize(unique(g.begin(), g.end()) - g.begin());
        if (!_size(g)) {
            FORALL(u, adj[i]) used[u]++;
            continue;
        }
        if (_size(g) == 1) return 0;
        g.push_back(i);
        REP(j, _size(g) - 1) ans.push_back({g[j], g[j + 1]});
        ans.push_back({g.back(), g[0]});
        vector<int> allVtx;
        FORALL(id, g) FORALL(u, adj[id]) allVtx.push_back(u), used[u]++;
        FORALL(u, allVtx) FORALL(v, allVtx) {
            if (getroot(u) == getroot(v)) continue;
            cnt[u][v] = 2;
        }
    }
    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 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1472 KB Output is correct
7 Correct 165 ms 27216 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 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1472 KB Output is correct
7 Correct 165 ms 27216 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 158 ms 27472 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 856 KB Output is correct
17 Correct 73 ms 13448 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 7248 KB Output is correct
21 Correct 156 ms 27256 KB Output is correct
22 Correct 157 ms 27216 KB Output is correct
23 Correct 162 ms 27216 KB Output is correct
24 Correct 157 ms 27472 KB Output is correct
25 Correct 67 ms 13576 KB Output is correct
26 Correct 68 ms 13792 KB Output is correct
27 Correct 165 ms 27216 KB Output is correct
28 Correct 157 ms 27292 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 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1372 KB Output is correct
9 Correct 156 ms 27404 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 157 ms 27472 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 4 ms 856 KB Output is correct
17 Correct 71 ms 13580 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 42 ms 7788 KB Output is correct
22 Correct 163 ms 27472 KB Output is correct
23 Correct 158 ms 27728 KB Output is correct
24 Correct 158 ms 27472 KB Output is correct
25 Correct 67 ms 13648 KB Output is correct
26 Correct 66 ms 13392 KB Output is correct
27 Correct 157 ms 27384 KB Output is correct
28 Correct 159 ms 27256 KB Output is correct
29 Correct 65 ms 13392 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 46 ms 7248 KB Output is correct
5 Correct 157 ms 27216 KB Output is correct
6 Correct 157 ms 27472 KB Output is correct
7 Correct 163 ms 27220 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 40 ms 7200 KB Output is correct
10 Correct 156 ms 27476 KB Output is correct
11 Correct 158 ms 27472 KB Output is correct
12 Correct 160 ms 27452 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 44 ms 7248 KB Output is correct
17 Correct 152 ms 28024 KB Output is correct
18 Correct 159 ms 28024 KB Output is correct
19 Correct 173 ms 28224 KB Output is correct
20 Correct 159 ms 28072 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 1 ms 344 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1472 KB Output is correct
7 Correct 165 ms 27216 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 158 ms 27472 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 856 KB Output is correct
17 Correct 73 ms 13448 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 7248 KB Output is correct
21 Correct 156 ms 27256 KB Output is correct
22 Correct 157 ms 27216 KB Output is correct
23 Correct 162 ms 27216 KB Output is correct
24 Correct 157 ms 27472 KB Output is correct
25 Correct 67 ms 13576 KB Output is correct
26 Correct 68 ms 13792 KB Output is correct
27 Correct 165 ms 27216 KB Output is correct
28 Correct 157 ms 27292 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 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 156 ms 27404 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 157 ms 27472 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 856 KB Output is correct
45 Correct 71 ms 13580 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 42 ms 7788 KB Output is correct
50 Correct 163 ms 27472 KB Output is correct
51 Correct 158 ms 27728 KB Output is correct
52 Correct 158 ms 27472 KB Output is correct
53 Correct 67 ms 13648 KB Output is correct
54 Correct 66 ms 13392 KB Output is correct
55 Correct 157 ms 27384 KB Output is correct
56 Correct 159 ms 27256 KB Output is correct
57 Correct 65 ms 13392 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 73 ms 13392 KB Output is correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 344 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 40 ms 7252 KB Output is correct
66 Correct 66 ms 14152 KB Output is correct
67 Correct 67 ms 14160 KB Output is correct
68 Correct 65 ms 14160 KB Output is correct
69 Correct 65 ms 14160 KB Output is correct

Subtask #6
4.0 / 4.0

# 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 1 ms 344 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 7 ms 1472 KB Output is correct
7 Correct 165 ms 27216 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 158 ms 27472 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 856 KB Output is correct
17 Correct 73 ms 13448 KB Output is correct
18 Correct 1 ms 600 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 40 ms 7248 KB Output is correct
21 Correct 156 ms 27256 KB Output is correct
22 Correct 157 ms 27216 KB Output is correct
23 Correct 162 ms 27216 KB Output is correct
24 Correct 157 ms 27472 KB Output is correct
25 Correct 67 ms 13576 KB Output is correct
26 Correct 68 ms 13792 KB Output is correct
27 Correct 165 ms 27216 KB Output is correct
28 Correct 157 ms 27292 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 1 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 156 ms 27404 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 157 ms 27472 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 4 ms 856 KB Output is correct
45 Correct 71 ms 13580 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 1 ms 344 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 42 ms 7788 KB Output is correct
50 Correct 163 ms 27472 KB Output is correct
51 Correct 158 ms 27728 KB Output is correct
52 Correct 158 ms 27472 KB Output is correct
53 Correct 67 ms 13648 KB Output is correct
54 Correct 66 ms 13392 KB Output is correct
55 Correct 157 ms 27384 KB Output is correct
56 Correct 159 ms 27256 KB Output is correct
57 Correct 65 ms 13392 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 46 ms 7248 KB Output is correct
62 Correct 157 ms 27216 KB Output is correct
63 Correct 157 ms 27472 KB Output is correct
64 Correct 163 ms 27220 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 40 ms 7200 KB Output is correct
67 Correct 156 ms 27476 KB Output is correct
68 Correct 158 ms 27472 KB Output is correct
69 Correct 160 ms 27452 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 344 KB Output is correct
73 Correct 44 ms 7248 KB Output is correct
74 Correct 152 ms 28024 KB Output is correct
75 Correct 159 ms 28024 KB Output is correct
76 Correct 173 ms 28224 KB Output is correct
77 Correct 159 ms 28072 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 860 KB Output is correct
81 Correct 73 ms 13392 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 40 ms 7252 KB Output is correct
86 Correct 66 ms 14152 KB Output is correct
87 Correct 67 ms 14160 KB Output is correct
88 Correct 65 ms 14160 KB Output is correct
89 Correct 65 ms 14160 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct
92 Correct 3 ms 600 KB Output is correct
93 Correct 61 ms 10248 KB Output is correct
94 Correct 1 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Correct 16 ms 2640 KB Output is correct
98 Correct 64 ms 10228 KB Output is correct
99 Correct 64 ms 10068 KB Output is correct
100 Correct 64 ms 10152 KB Output is correct
101 Correct 63 ms 10064 KB Output is correct
102 Correct 63 ms 10064 KB Output is correct
103 Correct 63 ms 10104 KB Output is correct
104 Correct 58 ms 10072 KB Output is correct
105 Correct 64 ms 10068 KB Output is correct