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Submission #304935

# Submission time Handle Problem Language Result Execution time Memory
304935 2020-09-22T08:47:52 Z myungwoo Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 270 ms 22264 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
  
int construct(vector<vector<int>> p)
{
    int N = p.size();
    for (int i=0;i<N;i++) for (int j=0;j<N;j++) if (p[i][j] == 3) return 0;
  
    vector<vector<int>> answer(N, vector<int>(N, 0));
  
    // union-find
    vector<int> line(N, 0), compo(N, 0);
    for (int i=0;i<N;i++) line[i] = compo[i] = i;
    function<int(int, vector<int>&)> find;
    find = [&](int n, vector<int> &par){
        return par[n] == n ? n : par[n] = find(par[n], par);
    };
    auto _union = [&](vector<int> &par, int a, int b){
      par[find(b, par)] = find(a, par);
    };
    for (int i=0;i<N;i++) for (int j=i+1;j<N;j++){
        if (p[i][j]) _union(compo, i, j);
        if (p[i][j] == 1) _union(line, i, j);
    }
    for (int i=0;i<N;i++) find(i, compo), find(i, line);

    auto connect = [&](int a, int b){ answer[a][b] = answer[b][a] = 1; };
    for (int i=0;i<N;i++) if (compo[i] == i){
        vector <int> cycle;
        for (int j=0;j<N;j++) if (compo[j] == i && line[j] == j) cycle.push_back(j);
        int n = cycle.size();
        if (n == 1) continue;
        if (n == 2) return 0;
        for (int j=0;j<n;j++) connect(cycle[j], cycle[(j+1)%n]);
    }
    for (int i=0;i<N;i++) if (line[i] != i) connect(line[i], i);
    for (int i=0;i<N;i++) for (int j=i+1;j<N;j++){
        if (line[i] == line[j]){
            if (p[i][j] != 1) return 0;
        }
        else if (compo[i] == compo[j]){
            if (p[i][j] != 2) return 0;
        }else{
            if (p[i][j] != 0) return 0;
        }
    }
    build(answer);
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 11 ms 1176 KB Output is correct
7 Correct 268 ms 22044 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 11 ms 1176 KB Output is correct
7 Correct 268 ms 22044 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 239 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 126 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5808 KB Output is correct
21 Correct 244 ms 22136 KB Output is correct
22 Correct 239 ms 22100 KB Output is correct
23 Correct 270 ms 22136 KB Output is correct
24 Correct 237 ms 22136 KB Output is correct
25 Correct 106 ms 12152 KB Output is correct
26 Correct 104 ms 12112 KB Output is correct
27 Correct 266 ms 22136 KB Output is correct
28 Correct 239 ms 22084 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 10 ms 1280 KB Output is correct
9 Correct 242 ms 22136 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 258 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 121 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 60 ms 5752 KB Output is correct
22 Correct 242 ms 22136 KB Output is correct
23 Correct 238 ms 22136 KB Output is correct
24 Correct 259 ms 22136 KB Output is correct
25 Correct 108 ms 12152 KB Output is correct
26 Correct 104 ms 12152 KB Output is correct
27 Correct 236 ms 22104 KB Output is correct
28 Correct 258 ms 22136 KB Output is correct
29 Correct 101 ms 12152 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 61 ms 5880 KB Output is correct
5 Correct 243 ms 22136 KB Output is correct
6 Correct 239 ms 22136 KB Output is correct
7 Correct 266 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 60 ms 5752 KB Output is correct
10 Correct 243 ms 22264 KB Output is correct
11 Correct 239 ms 22136 KB Output is correct
12 Correct 259 ms 22100 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 59 ms 5752 KB Output is correct
17 Correct 246 ms 22136 KB Output is correct
18 Correct 242 ms 22136 KB Output is correct
19 Correct 237 ms 22104 KB Output is correct
20 Correct 246 ms 22264 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 11 ms 1176 KB Output is correct
7 Correct 268 ms 22044 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 239 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 126 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5808 KB Output is correct
21 Correct 244 ms 22136 KB Output is correct
22 Correct 239 ms 22100 KB Output is correct
23 Correct 270 ms 22136 KB Output is correct
24 Correct 237 ms 22136 KB Output is correct
25 Correct 106 ms 12152 KB Output is correct
26 Correct 104 ms 12112 KB Output is correct
27 Correct 266 ms 22136 KB Output is correct
28 Correct 239 ms 22084 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 242 ms 22136 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 258 ms 22136 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 6 ms 768 KB Output is correct
45 Correct 121 ms 12152 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Correct 60 ms 5752 KB Output is correct
50 Correct 242 ms 22136 KB Output is correct
51 Correct 238 ms 22136 KB Output is correct
52 Correct 259 ms 22136 KB Output is correct
53 Correct 108 ms 12152 KB Output is correct
54 Correct 104 ms 12152 KB Output is correct
55 Correct 236 ms 22104 KB Output is correct
56 Correct 258 ms 22136 KB Output is correct
57 Correct 101 ms 12152 KB Output is correct
58 Correct 0 ms 256 KB Output is correct
59 Correct 0 ms 256 KB Output is correct
60 Correct 6 ms 768 KB Output is correct
61 Correct 136 ms 12116 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 0 ms 256 KB Output is correct
64 Correct 0 ms 256 KB Output is correct
65 Correct 60 ms 5756 KB Output is correct
66 Correct 105 ms 12228 KB Output is correct
67 Correct 104 ms 12152 KB Output is correct
68 Correct 103 ms 12152 KB Output is correct
69 Correct 100 ms 12152 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 11 ms 1176 KB Output is correct
7 Correct 268 ms 22044 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 239 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 6 ms 768 KB Output is correct
17 Correct 126 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5808 KB Output is correct
21 Correct 244 ms 22136 KB Output is correct
22 Correct 239 ms 22100 KB Output is correct
23 Correct 270 ms 22136 KB Output is correct
24 Correct 237 ms 22136 KB Output is correct
25 Correct 106 ms 12152 KB Output is correct
26 Correct 104 ms 12112 KB Output is correct
27 Correct 266 ms 22136 KB Output is correct
28 Correct 239 ms 22084 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 242 ms 22136 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 258 ms 22136 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 6 ms 768 KB Output is correct
45 Correct 121 ms 12152 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Correct 60 ms 5752 KB Output is correct
50 Correct 242 ms 22136 KB Output is correct
51 Correct 238 ms 22136 KB Output is correct
52 Correct 259 ms 22136 KB Output is correct
53 Correct 108 ms 12152 KB Output is correct
54 Correct 104 ms 12152 KB Output is correct
55 Correct 236 ms 22104 KB Output is correct
56 Correct 258 ms 22136 KB Output is correct
57 Correct 101 ms 12152 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 0 ms 256 KB Output is correct
60 Correct 0 ms 256 KB Output is correct
61 Correct 61 ms 5880 KB Output is correct
62 Correct 243 ms 22136 KB Output is correct
63 Correct 239 ms 22136 KB Output is correct
64 Correct 266 ms 22136 KB Output is correct
65 Correct 0 ms 256 KB Output is correct
66 Correct 60 ms 5752 KB Output is correct
67 Correct 243 ms 22264 KB Output is correct
68 Correct 239 ms 22136 KB Output is correct
69 Correct 259 ms 22100 KB Output is correct
70 Correct 0 ms 256 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 0 ms 256 KB Output is correct
73 Correct 59 ms 5752 KB Output is correct
74 Correct 246 ms 22136 KB Output is correct
75 Correct 242 ms 22136 KB Output is correct
76 Correct 237 ms 22104 KB Output is correct
77 Correct 246 ms 22264 KB Output is correct
78 Correct 0 ms 256 KB Output is correct
79 Correct 0 ms 256 KB Output is correct
80 Correct 6 ms 768 KB Output is correct
81 Correct 136 ms 12116 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 0 ms 256 KB Output is correct
84 Correct 0 ms 256 KB Output is correct
85 Correct 60 ms 5756 KB Output is correct
86 Correct 105 ms 12228 KB Output is correct
87 Correct 104 ms 12152 KB Output is correct
88 Correct 103 ms 12152 KB Output is correct
89 Correct 100 ms 12152 KB Output is correct
90 Correct 0 ms 256 KB Output is correct
91 Correct 0 ms 256 KB Output is correct
92 Correct 5 ms 640 KB Output is correct
93 Correct 110 ms 8152 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 0 ms 256 KB Output is correct
96 Correct 0 ms 256 KB Output is correct
97 Correct 27 ms 2296 KB Output is correct
98 Correct 100 ms 8184 KB Output is correct
99 Correct 101 ms 8184 KB Output is correct
100 Correct 104 ms 8184 KB Output is correct
101 Correct 99 ms 8152 KB Output is correct
102 Correct 109 ms 8184 KB Output is correct
103 Correct 107 ms 8188 KB Output is correct
104 Correct 109 ms 8184 KB Output is correct
105 Correct 108 ms 8148 KB Output is correct