oj.uz

Submission #581609

# Submission time Handle Problem Language Result Execution time Memory
581609 2022-06-22T20:55:56 Z Valaki2 Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 239 ms 24180 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back

int n;
vector<vector<int> > answer;

void add_edge(int x, int y) {
    answer[x][y] = 1;
    answer[y][x] = 1;
}

void dfs(int cur, vector<vector<int> > &p, int &comp_cnt, vector<int> &comp, vector<int> &poss, int weight, vector<vector<int> > &by_comp) {
    comp[cur] = comp_cnt;
    by_comp[comp_cnt - 1].pb(cur);
    for(int nei : poss) {
        if(!comp[nei] && p[cur][nei] == weight) {
           dfs(nei, p, comp_cnt, comp, poss, weight, by_comp);
        }
    }
}

int construct(vector<vector<int> > p) {
    n = (int) p.size();
    answer.assign(n, vector<int> (n, 0));
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            if(p[i][j] == 3) {
                return 0;
            }
        }
    }
    int tree_cnt = 0;
    vector<int> which_tree(n, 0);
    vector<int> all(n, 0);
    for(int i = 0; i < n; i++) {
        all[i] = i;
    }
    vector<vector<int> > by_tree(n, vector<int> (0, 0));
    for(int cur : all) {
        if(!which_tree[cur]) {
            tree_cnt++;
            dfs(cur, p, tree_cnt, which_tree, all, 1, by_tree);
        }
    }
    by_tree.resize(tree_cnt);
    vector<int> rep(n, -1);
    vector<int> list_reps;
    for(vector<int> &tree : by_tree) {
        list_reps.pb(tree[0]);
        for(int &cur : tree) {
            rep[cur] = tree[0];
        }
        for(int i = 0; i + 1 < (int) tree.size(); i++) {
            add_edge(tree[i], tree[i + 1]);
        }
        for(int x : tree) {
            for(int y : tree) {
                if(x != y && p[x][y] != 1) {
                    return 0;
                }
            }
        }
    }
    for(int x = 0; x < n; x++) {
        for(int y = 0; y < n; y++) {
            if(p[x][y] != p[rep[x]][rep[y]]) {
                return 0;
            }
        }
    }
    int cycle_cnt = 0;
    vector<int> which_cycle(n, 0);
    vector<vector<int> > by_cycle(n, vector<int> (0, 0));
    for(int cur : list_reps) {
        if(!which_cycle[cur]) {
            cycle_cnt++;
            dfs(cur, p, cycle_cnt, which_cycle, list_reps, 2, by_cycle);
        }
    }
    by_cycle.resize(cycle_cnt);
    for(vector<int> &cycle : by_cycle) {
        if((int) cycle.size() == 2) {
            return 0;
        }
        if((int) cycle.size() != 1) {
            for(int i = 0; i + 1 < (int) cycle.size(); i++) {
                add_edge(cycle[i], cycle[i + 1]);
            }
            add_edge(cycle.back(), cycle[0]);
        }
        for(int x : cycle) {
            for(int y : cycle) {
                if(x != y && p[x][y] != 2) {
                    return 0;
                }
            }
        }
    }
	build(answer);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1236 KB Output is correct
7 Correct 179 ms 24068 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1236 KB Output is correct
7 Correct 179 ms 24068 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 296 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 178 ms 24180 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 77 ms 14208 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 43 ms 6240 KB Output is correct
21 Correct 180 ms 24140 KB Output is correct
22 Correct 186 ms 24024 KB Output is correct
23 Correct 200 ms 24088 KB Output is correct
24 Correct 172 ms 24096 KB Output is correct
25 Correct 73 ms 14080 KB Output is correct
26 Correct 71 ms 14068 KB Output is correct
27 Correct 180 ms 24104 KB Output is correct
28 Correct 179 ms 24140 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 7 ms 1180 KB Output is correct
9 Correct 239 ms 24052 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 11 ms 1236 KB Output is correct
13 Correct 169 ms 24124 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 828 KB Output is correct
17 Correct 78 ms 14192 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 44 ms 6224 KB Output is correct
22 Correct 177 ms 24048 KB Output is correct
23 Correct 181 ms 24028 KB Output is correct
24 Correct 181 ms 24140 KB Output is correct
25 Correct 70 ms 14192 KB Output is correct
26 Correct 76 ms 14156 KB Output is correct
27 Correct 178 ms 24080 KB Output is correct
28 Correct 194 ms 24076 KB Output is correct
29 Correct 79 ms 14120 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 43 ms 6264 KB Output is correct
5 Correct 176 ms 23996 KB Output is correct
6 Correct 169 ms 23980 KB Output is correct
7 Correct 179 ms 24052 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 44 ms 6212 KB Output is correct
10 Correct 184 ms 24044 KB Output is correct
11 Correct 178 ms 24180 KB Output is correct
12 Correct 176 ms 24140 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 46 ms 6252 KB Output is correct
17 Correct 179 ms 24104 KB Output is correct
18 Correct 173 ms 24012 KB Output is correct
19 Correct 172 ms 24052 KB Output is correct
20 Correct 170 ms 24120 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1236 KB Output is correct
7 Correct 179 ms 24068 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 296 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 178 ms 24180 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 77 ms 14208 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 43 ms 6240 KB Output is correct
21 Correct 180 ms 24140 KB Output is correct
22 Correct 186 ms 24024 KB Output is correct
23 Correct 200 ms 24088 KB Output is correct
24 Correct 172 ms 24096 KB Output is correct
25 Correct 73 ms 14080 KB Output is correct
26 Correct 71 ms 14068 KB Output is correct
27 Correct 180 ms 24104 KB Output is correct
28 Correct 179 ms 24140 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1180 KB Output is correct
37 Correct 239 ms 24052 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 11 ms 1236 KB Output is correct
41 Correct 169 ms 24124 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 828 KB Output is correct
45 Correct 78 ms 14192 KB Output is correct
46 Correct 1 ms 300 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 44 ms 6224 KB Output is correct
50 Correct 177 ms 24048 KB Output is correct
51 Correct 181 ms 24028 KB Output is correct
52 Correct 181 ms 24140 KB Output is correct
53 Correct 70 ms 14192 KB Output is correct
54 Correct 76 ms 14156 KB Output is correct
55 Correct 178 ms 24080 KB Output is correct
56 Correct 194 ms 24076 KB Output is correct
57 Correct 79 ms 14120 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 4 ms 824 KB Output is correct
61 Correct 77 ms 14200 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 296 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 46 ms 6196 KB Output is correct
66 Correct 69 ms 14156 KB Output is correct
67 Correct 76 ms 14072 KB Output is correct
68 Correct 70 ms 14072 KB Output is correct
69 Correct 69 ms 14192 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 8 ms 1236 KB Output is correct
7 Correct 179 ms 24068 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 296 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 178 ms 24180 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 296 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 77 ms 14208 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 43 ms 6240 KB Output is correct
21 Correct 180 ms 24140 KB Output is correct
22 Correct 186 ms 24024 KB Output is correct
23 Correct 200 ms 24088 KB Output is correct
24 Correct 172 ms 24096 KB Output is correct
25 Correct 73 ms 14080 KB Output is correct
26 Correct 71 ms 14068 KB Output is correct
27 Correct 180 ms 24104 KB Output is correct
28 Correct 179 ms 24140 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1180 KB Output is correct
37 Correct 239 ms 24052 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 11 ms 1236 KB Output is correct
41 Correct 169 ms 24124 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 828 KB Output is correct
45 Correct 78 ms 14192 KB Output is correct
46 Correct 1 ms 300 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 44 ms 6224 KB Output is correct
50 Correct 177 ms 24048 KB Output is correct
51 Correct 181 ms 24028 KB Output is correct
52 Correct 181 ms 24140 KB Output is correct
53 Correct 70 ms 14192 KB Output is correct
54 Correct 76 ms 14156 KB Output is correct
55 Correct 178 ms 24080 KB Output is correct
56 Correct 194 ms 24076 KB Output is correct
57 Correct 79 ms 14120 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 43 ms 6264 KB Output is correct
62 Correct 176 ms 23996 KB Output is correct
63 Correct 169 ms 23980 KB Output is correct
64 Correct 179 ms 24052 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 44 ms 6212 KB Output is correct
67 Correct 184 ms 24044 KB Output is correct
68 Correct 178 ms 24180 KB Output is correct
69 Correct 176 ms 24140 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 46 ms 6252 KB Output is correct
74 Correct 179 ms 24104 KB Output is correct
75 Correct 173 ms 24012 KB Output is correct
76 Correct 172 ms 24052 KB Output is correct
77 Correct 170 ms 24120 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 4 ms 824 KB Output is correct
81 Correct 77 ms 14200 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 296 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 46 ms 6196 KB Output is correct
86 Correct 69 ms 14156 KB Output is correct
87 Correct 76 ms 14072 KB Output is correct
88 Correct 70 ms 14072 KB Output is correct
89 Correct 69 ms 14192 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 3 ms 820 KB Output is correct
93 Correct 82 ms 14064 KB Output is correct
94 Correct 0 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 1 ms 304 KB Output is correct
97 Correct 23 ms 3684 KB Output is correct
98 Correct 66 ms 14028 KB Output is correct
99 Correct 67 ms 14000 KB Output is correct
100 Correct 66 ms 14068 KB Output is correct
101 Correct 76 ms 14064 KB Output is correct
102 Correct 69 ms 14064 KB Output is correct
103 Correct 71 ms 14068 KB Output is correct
104 Correct 65 ms 14076 KB Output is correct
105 Correct 102 ms 14080 KB Output is correct