oj.uz

Submission #927694

# Submission time Handle Problem Language Result Execution time Memory
927694 2024-02-15T08:49:27 Z haxorman Connecting Supertrees (IOI20_supertrees) C++14
96 / 100
 187 ms 23732 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;

const int mxN = 1007;

int dsu[mxN][2];
bool mark[mxN], done[mxN];
vector<int> cmp[mxN][2];

int find(int x, int id) {
    return dsu[x][id] < 0 ? x : dsu[x][id] = find(dsu[x][id], id);
}

bool unite(int x, int y, int id) {
    x = find(x, id), y = find(y, id);

    if (x == y) {
        return false;
    }

    if (dsu[x][id] > dsu[y][id]) {
        swap(x, y);
    }
    dsu[x][id] += dsu[y][id];
    dsu[y][id] = x;

    for (auto c : cmp[y][id]) {
        cmp[x][id].push_back(c);
    }

    return true;
}

int construct(vector<vector<int>> p) {
	int n = p.size();
    memset(dsu, -1, sizeof(dsu));
    vector<vector<int>> ans(n, vector<int>(n));
    
    for (int i = 0; i < n; ++i) {
        cmp[i][0].push_back(i);
        cmp[i][1].push_back(i);
    }

    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (p[i][j] == 1) {
                if (unite(i, j, 0)) {
                    ans[i][j] = ans[j][i] = 1;
                }
            } 
        }
    }
    
    for (int i = 0; i < n; ++i) {
        for (int j = i + 1; j < n; ++j) {
            if (p[i][j] == 2) {
                int x = find(i, 0), y = find(j, 0);
                if (x == y) {
                    return 0;
                }

                if (find(x, 1) == find(y, 1)) {
                    continue;
                }

                for (auto u : cmp[x][0]) {
                    for (auto v : cmp[y][0]) {
                        if (p[u][v] != 2) {
                            return 0;
                        }
                    }
                }
                unite(x, y, 1);
            }
        }
    }

    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            int x = find(i, 0), y = find(j, 0);
            if (!p[i][j] && (x == y || find(x, 1) == find(y, 1))) {
                return 0;
            }

            if (p[i][j] == 1 && x != y && find(x, 1) == find(y,1)) {
                return 0;
            }
        }
    }

    for (int i = 0; i < n; ++i) {
        int x = find(i, 0);
        int z = find(x, 1);
        if (done[z] || cmp[z][1].size() == 1) {
            continue;
        }

        if (cmp[z][1].size() == 2) {
            return 0;
        } 

        for (int j = 0; j < cmp[z][1].size() - 1; ++j) {
            int a = cmp[z][1][j], b = cmp[z][1][j+1];
            ans[a][b] = ans[b][a] = 1;
        }
        int a = cmp[z][1][0], b = cmp[z][1].back();
        ans[a][b] = ans[b][a] = 1;
    }
    build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:103:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |         for (int j = 0; j < cmp[z][1].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 7 ms 1364 KB Output is correct
7 Correct 161 ms 22168 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 7 ms 1364 KB Output is correct
7 Correct 161 ms 22168 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 1 ms 348 KB Output is correct
12 Correct 8 ms 1372 KB Output is correct
13 Correct 162 ms 22096 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 73 ms 12392 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 39 ms 5972 KB Output is correct
21 Correct 158 ms 22204 KB Output is correct
22 Correct 178 ms 22088 KB Output is correct
23 Correct 186 ms 22096 KB Output is correct
24 Correct 158 ms 22300 KB Output is correct
25 Correct 64 ms 12348 KB Output is correct
26 Correct 63 ms 12372 KB Output is correct
27 Correct 165 ms 22100 KB Output is correct
28 Correct 155 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 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 7 ms 1160 KB Output is correct
9 Correct 161 ms 22092 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 155 ms 22096 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 69 ms 12372 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 39 ms 5780 KB Output is correct
22 Correct 163 ms 23724 KB Output is correct
23 Correct 186 ms 23584 KB Output is correct
24 Correct 162 ms 23660 KB Output is correct
25 Correct 66 ms 13664 KB Output is correct
26 Correct 65 ms 13788 KB Output is correct
27 Correct 167 ms 23612 KB Output is correct
28 Correct 187 ms 23732 KB Output is correct
29 Correct 66 ms 13720 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 39 ms 5756 KB Output is correct
5 Correct 166 ms 22608 KB Output is correct
6 Correct 156 ms 22100 KB Output is correct
7 Correct 164 ms 22096 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 40 ms 5876 KB Output is correct
10 Correct 160 ms 22100 KB Output is correct
11 Correct 159 ms 22084 KB Output is correct
12 Correct 161 ms 22080 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 41 ms 5776 KB Output is correct
17 Correct 180 ms 22076 KB Output is correct
18 Correct 164 ms 22092 KB Output is correct
19 Correct 161 ms 22208 KB Output is correct
20 Correct 156 ms 22072 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 7 ms 1364 KB Output is correct
7 Correct 161 ms 22168 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 1 ms 348 KB Output is correct
12 Correct 8 ms 1372 KB Output is correct
13 Correct 162 ms 22096 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 73 ms 12392 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 39 ms 5972 KB Output is correct
21 Correct 158 ms 22204 KB Output is correct
22 Correct 178 ms 22088 KB Output is correct
23 Correct 186 ms 22096 KB Output is correct
24 Correct 158 ms 22300 KB Output is correct
25 Correct 64 ms 12348 KB Output is correct
26 Correct 63 ms 12372 KB Output is correct
27 Correct 165 ms 22100 KB Output is correct
28 Correct 155 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 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 7 ms 1160 KB Output is correct
37 Correct 161 ms 22092 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 155 ms 22096 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 69 ms 12372 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 39 ms 5780 KB Output is correct
50 Correct 163 ms 23724 KB Output is correct
51 Correct 186 ms 23584 KB Output is correct
52 Correct 162 ms 23660 KB Output is correct
53 Correct 66 ms 13664 KB Output is correct
54 Correct 65 ms 13788 KB Output is correct
55 Correct 167 ms 23612 KB Output is correct
56 Correct 187 ms 23732 KB Output is correct
57 Correct 66 ms 13720 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 4 ms 860 KB Output is correct
61 Correct 73 ms 13612 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 40 ms 6344 KB Output is correct
66 Correct 65 ms 13652 KB Output is correct
67 Correct 79 ms 13648 KB Output is correct
68 Correct 64 ms 13648 KB Output is correct
69 Correct 67 ms 13652 KB Output is correct

Subtask #6
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 7 ms 1364 KB Output is correct
7 Correct 161 ms 22168 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 1 ms 348 KB Output is correct
12 Correct 8 ms 1372 KB Output is correct
13 Correct 162 ms 22096 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 73 ms 12392 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 39 ms 5972 KB Output is correct
21 Correct 158 ms 22204 KB Output is correct
22 Correct 178 ms 22088 KB Output is correct
23 Correct 186 ms 22096 KB Output is correct
24 Correct 158 ms 22300 KB Output is correct
25 Correct 64 ms 12348 KB Output is correct
26 Correct 63 ms 12372 KB Output is correct
27 Correct 165 ms 22100 KB Output is correct
28 Correct 155 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 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 7 ms 1160 KB Output is correct
37 Correct 161 ms 22092 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1372 KB Output is correct
41 Correct 155 ms 22096 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 69 ms 12372 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 39 ms 5780 KB Output is correct
50 Correct 163 ms 23724 KB Output is correct
51 Correct 186 ms 23584 KB Output is correct
52 Correct 162 ms 23660 KB Output is correct
53 Correct 66 ms 13664 KB Output is correct
54 Correct 65 ms 13788 KB Output is correct
55 Correct 167 ms 23612 KB Output is correct
56 Correct 187 ms 23732 KB Output is correct
57 Correct 66 ms 13720 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 39 ms 5756 KB Output is correct
62 Correct 166 ms 22608 KB Output is correct
63 Correct 156 ms 22100 KB Output is correct
64 Correct 164 ms 22096 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 40 ms 5876 KB Output is correct
67 Correct 160 ms 22100 KB Output is correct
68 Correct 159 ms 22084 KB Output is correct
69 Correct 161 ms 22080 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 1 ms 344 KB Output is correct
73 Correct 41 ms 5776 KB Output is correct
74 Correct 180 ms 22076 KB Output is correct
75 Correct 164 ms 22092 KB Output is correct
76 Correct 161 ms 22208 KB Output is correct
77 Correct 156 ms 22072 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 4 ms 860 KB Output is correct
81 Correct 73 ms 13612 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 40 ms 6344 KB Output is correct
86 Correct 65 ms 13652 KB Output is correct
87 Correct 79 ms 13648 KB Output is correct
88 Correct 64 ms 13648 KB Output is correct
89 Correct 67 ms 13652 KB Output is correct
90 Correct 1 ms 344 KB Output is correct
91 Correct 1 ms 348 KB Output is correct
92 Correct 5 ms 860 KB Output is correct
93 Correct 71 ms 13644 KB Output is correct
94 Incorrect 0 ms 344 KB Answer gives possible 1 while actual possible 0
95 Halted 0 ms 0 KB -