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Submission #1011941

# Submission time Handle Problem Language Result Execution time Memory
1011941 2024-07-01T11:26:22 Z LucaIlie Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 131 ms 22180 KB 
#include "supertrees.h"
#include <vector>
#include <iostream>
using namespace std;
vector<vector<int>> answer;
#define nmax 1000
int daddy[nmax], daddy_cyc[nmax];
vector<int> cyc[nmax];

int find_daddy( int a ) {
    int x;
    if( daddy[a] == a )
        return a;
    x = find_daddy( daddy[a] );
    daddy[a] = x;
    return x;
}

void marry_daddy( int a, int b ) {
    int x, y;
    x = find_daddy( a );
    y = find_daddy( b );
    daddy[x] = y;
}

int find_daddy_cyc( int a ) {
    int x;
    if( daddy_cyc[a] == a )
        return a;
    x = find_daddy_cyc( daddy_cyc[a] );
    daddy_cyc[a] = x;
    return x;
}

void marry_daddy_cyc( int a, int b ) {
    int x, y;
    x = find_daddy_cyc( a );
    y = find_daddy_cyc( b );
    daddy_cyc[x] = y;
}

int construct( vector<vector<int>> p) {
    int n = p.size();
    for (int i = 0; i < n; i++) {
        vector<int> row;
        row.resize(n);
        answer.push_back(row);
    }

    int i, j;
    bool ok = true;

    for( i = 0; i < n; i++ ) {
        for( j = 0; j < n; j++ )
            if( p[i][j] == 3 )
                ok = false;
    }
    if( !ok )
        return 0;
    for( i = 0; i < n; i++ )
        daddy[i] = daddy_cyc[i] = i;
    for( i = 0; i < n; i++ ) {
        for( j = 0; j < n; j++ )
            if( p[i][j] == 1 )
                marry_daddy( i, j );
    }
    for( i = 0; i < n; i++ ) {
        for( j = 0; j < n; j++ )
            if( p[i][j] != 1 && find_daddy(i) == find_daddy(j) )
                ok = false;
    }
    if( !ok )
        return 0;
    for( i = 0; i < n; i++ )
        if( find_daddy(i) != i ) {
            answer[i][find_daddy(i)] = 1;
            answer[find_daddy(i)][i] = 1;
        }

    for( i = 0; i < n; i++ ) {
        for( j = 0; j < n; j++ )
            if( p[i][j] == 2 )
                marry_daddy_cyc(find_daddy(i), find_daddy(j) );
    }
    for( i = 0; i < n; i++ ) {
        for( j = 0; j < n; j++ )
            if( p[i][j] < 2 && find_daddy(i) != find_daddy(j) && find_daddy_cyc(find_daddy(i)) == find_daddy_cyc(find_daddy(j)) )
                ok = false;
    }
    if( !ok )
        return 0;

    for( i = 0; i < n; i++ ) {
        if( find_daddy_cyc(i) != i )
            cyc[find_daddy_cyc(i)].push_back(i);
    }

    for( i = 0; i < n; i++ ) {
        if( cyc[i].size() == 1 )
            ok = false;
        if( cyc[i].size() >= 2 ) {
            for( j = 0; j < cyc[i].size() - 1; j++ ) {
                answer[cyc[i][j+1]][cyc[i][j]] = 1;
                answer[cyc[i][j]][cyc[i][j+1]] = 1;
            }
            answer[i][cyc[i][0]] = 1;
            answer[cyc[i][0]][i] = 1;
            answer[i][cyc[i][j]] = 1;
            answer[cyc[i][j]][i] = 1;
        }
    }
    if( !ok )
        return 0;
    build(answer);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:102:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |             for( j = 0; j < cyc[i].size() - 1; j++ ) {
      |                         ~~^~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 348 KB Output is correct
6 Correct 4 ms 1116 KB Output is correct
7 Correct 106 ms 22068 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 348 KB Output is correct
6 Correct 4 ms 1116 KB Output is correct
7 Correct 106 ms 22068 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 4 ms 1132 KB Output is correct
13 Correct 125 ms 22068 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 75 ms 12088 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 5872 KB Output is correct
21 Correct 111 ms 22096 KB Output is correct
22 Correct 125 ms 22060 KB Output is correct
23 Correct 117 ms 22096 KB Output is correct
24 Correct 120 ms 22040 KB Output is correct
25 Correct 52 ms 12068 KB Output is correct
26 Correct 53 ms 12332 KB Output is correct
27 Correct 122 ms 22068 KB Output is correct
28 Correct 121 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 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 5 ms 1116 KB Output is correct
9 Correct 112 ms 22144 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 115 ms 22180 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 68 ms 12136 KB Output is correct
18 Correct 1 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 32 ms 5740 KB Output is correct
22 Correct 119 ms 22096 KB Output is correct
23 Correct 116 ms 22096 KB Output is correct
24 Correct 114 ms 22100 KB Output is correct
25 Correct 55 ms 12312 KB Output is correct
26 Correct 62 ms 12084 KB Output is correct
27 Correct 121 ms 22096 KB Output is correct
28 Correct 111 ms 22100 KB Output is correct
29 Correct 58 ms 12120 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 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 28 ms 5872 KB Output is correct
5 Correct 114 ms 22096 KB Output is correct
6 Correct 112 ms 22100 KB Output is correct
7 Correct 119 ms 22064 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 30 ms 5700 KB Output is correct
10 Correct 109 ms 22100 KB Output is correct
11 Correct 131 ms 22064 KB Output is correct
12 Correct 116 ms 22064 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 29 ms 5896 KB Output is correct
17 Correct 108 ms 22096 KB Output is correct
18 Correct 118 ms 22096 KB Output is correct
19 Correct 115 ms 22096 KB Output is correct
20 Correct 108 ms 22068 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 348 KB Output is correct
6 Correct 4 ms 1116 KB Output is correct
7 Correct 106 ms 22068 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 4 ms 1132 KB Output is correct
13 Correct 125 ms 22068 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 75 ms 12088 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 5872 KB Output is correct
21 Correct 111 ms 22096 KB Output is correct
22 Correct 125 ms 22060 KB Output is correct
23 Correct 117 ms 22096 KB Output is correct
24 Correct 120 ms 22040 KB Output is correct
25 Correct 52 ms 12068 KB Output is correct
26 Correct 53 ms 12332 KB Output is correct
27 Correct 122 ms 22068 KB Output is correct
28 Correct 121 ms 22100 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1116 KB Output is correct
37 Correct 112 ms 22144 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1116 KB Output is correct
41 Correct 115 ms 22180 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 68 ms 12136 KB Output is correct
46 Correct 1 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 32 ms 5740 KB Output is correct
50 Correct 119 ms 22096 KB Output is correct
51 Correct 116 ms 22096 KB Output is correct
52 Correct 114 ms 22100 KB Output is correct
53 Correct 55 ms 12312 KB Output is correct
54 Correct 62 ms 12084 KB Output is correct
55 Correct 121 ms 22096 KB Output is correct
56 Correct 111 ms 22100 KB Output is correct
57 Correct 58 ms 12120 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 59 ms 12084 KB Output is correct
62 Correct 1 ms 344 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Correct 31 ms 5808 KB Output is correct
66 Correct 56 ms 12068 KB Output is correct
67 Correct 50 ms 12116 KB Output is correct
68 Correct 61 ms 12084 KB Output is correct
69 Correct 51 ms 12304 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 348 KB Output is correct
6 Correct 4 ms 1116 KB Output is correct
7 Correct 106 ms 22068 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 4 ms 1132 KB Output is correct
13 Correct 125 ms 22068 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 75 ms 12088 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 5872 KB Output is correct
21 Correct 111 ms 22096 KB Output is correct
22 Correct 125 ms 22060 KB Output is correct
23 Correct 117 ms 22096 KB Output is correct
24 Correct 120 ms 22040 KB Output is correct
25 Correct 52 ms 12068 KB Output is correct
26 Correct 53 ms 12332 KB Output is correct
27 Correct 122 ms 22068 KB Output is correct
28 Correct 121 ms 22100 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1116 KB Output is correct
37 Correct 112 ms 22144 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1116 KB Output is correct
41 Correct 115 ms 22180 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 68 ms 12136 KB Output is correct
46 Correct 1 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 32 ms 5740 KB Output is correct
50 Correct 119 ms 22096 KB Output is correct
51 Correct 116 ms 22096 KB Output is correct
52 Correct 114 ms 22100 KB Output is correct
53 Correct 55 ms 12312 KB Output is correct
54 Correct 62 ms 12084 KB Output is correct
55 Correct 121 ms 22096 KB Output is correct
56 Correct 111 ms 22100 KB Output is correct
57 Correct 58 ms 12120 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 28 ms 5872 KB Output is correct
62 Correct 114 ms 22096 KB Output is correct
63 Correct 112 ms 22100 KB Output is correct
64 Correct 119 ms 22064 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 30 ms 5700 KB Output is correct
67 Correct 109 ms 22100 KB Output is correct
68 Correct 131 ms 22064 KB Output is correct
69 Correct 116 ms 22064 KB Output is correct
70 Correct 1 ms 600 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 29 ms 5896 KB Output is correct
74 Correct 108 ms 22096 KB Output is correct
75 Correct 118 ms 22096 KB Output is correct
76 Correct 115 ms 22096 KB Output is correct
77 Correct 108 ms 22068 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 59 ms 12084 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 31 ms 5808 KB Output is correct
86 Correct 56 ms 12068 KB Output is correct
87 Correct 50 ms 12116 KB Output is correct
88 Correct 61 ms 12084 KB Output is correct
89 Correct 51 ms 12304 KB Output is correct
90 Correct 1 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 2 ms 860 KB Output is correct
93 Correct 49 ms 12076 KB Output is correct
94 Correct 1 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 12 ms 3744 KB Output is correct
98 Correct 50 ms 14160 KB Output is correct
99 Correct 49 ms 14160 KB Output is correct
100 Correct 51 ms 14244 KB Output is correct
101 Correct 43 ms 14164 KB Output is correct
102 Correct 52 ms 14164 KB Output is correct
103 Correct 45 ms 14164 KB Output is correct
104 Correct 48 ms 14244 KB Output is correct
105 Correct 53 ms 14248 KB Output is correct