oj.uz

Submission #883159

# Submission time Handle Problem Language Result Execution time Memory
883159 2023-12-04T16:37:13 Z AkibAzmain Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 167 ms 24148 KB 
#include <bits/stdc++.h>
using namespace std;
#include "supertrees.h"
#include <vector>

int construct(std::vector<std::vector<int>> p) {
  int n = p.size();
  std::vector<std::vector<int>> ans (n, vector < int > (n));
  vector < array < bool, 3 > > pt (n);
  vector < pair < int, int > > dsu (n);
  set < int > r;
  for (int i = 0; i < n; ++i) dsu[i].first = -1, dsu[i].second = 1;
  auto dsuc = [&] (int x)
  {
    while (dsu[x].first != -1) x = dsu[x].first;
    return x;
  };
  for (int i = 0; i < n; ++i)
    for (int j = i + 1; j < n; ++j)
      if (p[i][j])
        {
          if (p[i][j] == 3) return 0;
          pt[i][p[i][j]] = pt[j][p[i][j]] = true;
          if (p[i][j] == 1 && !r.count (i) && !r.count (j))
            ans[i][j] = 1, ans[j][i] = 1, r.insert (j);
          int ci = dsuc (i), cj = dsuc (j);
          if (ci != cj)
            {
              if (dsu[ci].second < dsu[cj].second) swap (ci, cj);
              dsu[cj].first = ci;
              dsu[ci].second += dsu[cj].second;
            }
        }
  for (int i = 0; i < n; ++i)
    for (int j = i + 1; j < n; ++j)
      if (!p[i][j] && dsuc (i) == dsuc (j)) return 0;
  map < int, array < set < int >, 3 > > m;
  for (int i = 0; i < n; ++i)
    {
      int ci = dsuc (i);
      if (pt[i][1]) m[ci][1].insert (i);
      if (pt[i][2]) m[ci][2].insert (i);
    }
  for (auto &[xx, x] : m)
    {
      if (x[2].empty ()) continue;
      if (x[2].size () <= 2) return 0;
      int pr = -1, f = -1;
      for (auto &y : x[2])
        {
          if (r.count (y)) continue;
          if (pr != -1) ans[pr][y] = ans[y][pr] = 1;
          pr = y;
          if (f == -1) f = y;
        }
      ans[pr][f] = ans[f][pr] = 1;
    }
  build (ans);
  return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 155 ms 22216 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 155 ms 22216 KB Output is correct
8 Correct 0 ms 348 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 6 ms 1116 KB Output is correct
13 Correct 145 ms 22044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 73 ms 12116 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5712 KB Output is correct
21 Correct 151 ms 22032 KB Output is correct
22 Correct 149 ms 22096 KB Output is correct
23 Correct 159 ms 22116 KB Output is correct
24 Correct 145 ms 22044 KB Output is correct
25 Correct 76 ms 12296 KB Output is correct
26 Correct 62 ms 12056 KB Output is correct
27 Correct 156 ms 22268 KB Output is correct
28 Correct 149 ms 22100 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 372 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 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 6 ms 1116 KB Output is correct
9 Correct 146 ms 22164 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 7 ms 1112 KB Output is correct
13 Correct 167 ms 22036 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 600 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 69 ms 12052 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 36 ms 5908 KB Output is correct
22 Correct 149 ms 22020 KB Output is correct
23 Correct 153 ms 22356 KB Output is correct
24 Correct 152 ms 22028 KB Output is correct
25 Correct 62 ms 12052 KB Output is correct
26 Correct 69 ms 12368 KB Output is correct
27 Correct 151 ms 22024 KB Output is correct
28 Correct 150 ms 22048 KB Output is correct
29 Correct 62 ms 12040 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 38 ms 5780 KB Output is correct
5 Correct 148 ms 22096 KB Output is correct
6 Correct 148 ms 22280 KB Output is correct
7 Correct 155 ms 22044 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 48 ms 6052 KB Output is correct
10 Correct 149 ms 22024 KB Output is correct
11 Correct 147 ms 22100 KB Output is correct
12 Correct 161 ms 22020 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 43 ms 5852 KB Output is correct
17 Correct 148 ms 24076 KB Output is correct
18 Correct 148 ms 24148 KB Output is correct
19 Correct 148 ms 24052 KB Output is correct
20 Correct 147 ms 23940 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 155 ms 22216 KB Output is correct
8 Correct 0 ms 348 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 6 ms 1116 KB Output is correct
13 Correct 145 ms 22044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 73 ms 12116 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5712 KB Output is correct
21 Correct 151 ms 22032 KB Output is correct
22 Correct 149 ms 22096 KB Output is correct
23 Correct 159 ms 22116 KB Output is correct
24 Correct 145 ms 22044 KB Output is correct
25 Correct 76 ms 12296 KB Output is correct
26 Correct 62 ms 12056 KB Output is correct
27 Correct 156 ms 22268 KB Output is correct
28 Correct 149 ms 22100 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 372 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 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 6 ms 1116 KB Output is correct
37 Correct 146 ms 22164 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 7 ms 1112 KB Output is correct
41 Correct 167 ms 22036 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 600 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 69 ms 12052 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 36 ms 5908 KB Output is correct
50 Correct 149 ms 22020 KB Output is correct
51 Correct 153 ms 22356 KB Output is correct
52 Correct 152 ms 22028 KB Output is correct
53 Correct 62 ms 12052 KB Output is correct
54 Correct 69 ms 12368 KB Output is correct
55 Correct 151 ms 22024 KB Output is correct
56 Correct 150 ms 22048 KB Output is correct
57 Correct 62 ms 12040 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 344 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 71 ms 12320 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 344 KB Output is correct
65 Correct 37 ms 5796 KB Output is correct
66 Correct 64 ms 14080 KB Output is correct
67 Correct 65 ms 14212 KB Output is correct
68 Correct 69 ms 14164 KB Output is correct
69 Correct 66 ms 14164 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 155 ms 22216 KB Output is correct
8 Correct 0 ms 348 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 6 ms 1116 KB Output is correct
13 Correct 145 ms 22044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 73 ms 12116 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5712 KB Output is correct
21 Correct 151 ms 22032 KB Output is correct
22 Correct 149 ms 22096 KB Output is correct
23 Correct 159 ms 22116 KB Output is correct
24 Correct 145 ms 22044 KB Output is correct
25 Correct 76 ms 12296 KB Output is correct
26 Correct 62 ms 12056 KB Output is correct
27 Correct 156 ms 22268 KB Output is correct
28 Correct 149 ms 22100 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 372 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 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 6 ms 1116 KB Output is correct
37 Correct 146 ms 22164 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 7 ms 1112 KB Output is correct
41 Correct 167 ms 22036 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 600 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 69 ms 12052 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 36 ms 5908 KB Output is correct
50 Correct 149 ms 22020 KB Output is correct
51 Correct 153 ms 22356 KB Output is correct
52 Correct 152 ms 22028 KB Output is correct
53 Correct 62 ms 12052 KB Output is correct
54 Correct 69 ms 12368 KB Output is correct
55 Correct 151 ms 22024 KB Output is correct
56 Correct 150 ms 22048 KB Output is correct
57 Correct 62 ms 12040 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 600 KB Output is correct
61 Correct 38 ms 5780 KB Output is correct
62 Correct 148 ms 22096 KB Output is correct
63 Correct 148 ms 22280 KB Output is correct
64 Correct 155 ms 22044 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 48 ms 6052 KB Output is correct
67 Correct 149 ms 22024 KB Output is correct
68 Correct 147 ms 22100 KB Output is correct
69 Correct 161 ms 22020 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 43 ms 5852 KB Output is correct
74 Correct 148 ms 24076 KB Output is correct
75 Correct 148 ms 24148 KB Output is correct
76 Correct 148 ms 24052 KB Output is correct
77 Correct 147 ms 23940 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 344 KB Output is correct
80 Correct 3 ms 860 KB Output is correct
81 Correct 71 ms 12320 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 344 KB Output is correct
85 Correct 37 ms 5796 KB Output is correct
86 Correct 64 ms 14080 KB Output is correct
87 Correct 65 ms 14212 KB Output is correct
88 Correct 69 ms 14164 KB Output is correct
89 Correct 66 ms 14164 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 860 KB Output is correct
93 Correct 65 ms 14164 KB Output is correct
94 Correct 0 ms 596 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 15 ms 3692 KB Output is correct
98 Correct 67 ms 14076 KB Output is correct
99 Correct 67 ms 14160 KB Output is correct
100 Correct 65 ms 14216 KB Output is correct
101 Correct 64 ms 14084 KB Output is correct
102 Correct 63 ms 14088 KB Output is correct
103 Correct 66 ms 14208 KB Output is correct
104 Correct 62 ms 14204 KB Output is correct
105 Correct 67 ms 14216 KB Output is correct