oj.uz

Submission #758916

# Submission time Handle Problem Language Result Execution time Memory
758916 2023-06-15T14:00:16 Z 1bin Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 178 ms 28004 KB 
#include<bits/stdc++.h>
#include "supertrees.h"

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 1005;
int par[NMAX], vis[NMAX], p[NMAX][NMAX], a, b;
vector<int> C[NMAX], V, t;
int find(int x){return par[x] == -1 ? x : par[x] = find(par[x]);}

void dfs(int x){
    if(vis[x]) return;
    vis[x] = 1;
    t.emplace_back(x);
    for(int& y : V) if(!vis[y] && p[x][y] == 2) dfs(y);
    return;
}

int construct(vector<vector<int>>p_){
    int n = p_.size(), a, b;
    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++) p[i][j] = p_[i][j];
    vector<vector<int>> E(n, vector<int>(n, 0));
    
    memset(par, -1, sizeof(par));
    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++){
            if(p[i][j] == 3) return 0;
            a = find(i); b = find(j);
            if(a == b) continue;
            if(p[i][j] == 1){
                par[b] = a; E[i][j] = E[j][i] = 1;
            }
        }
    
    
    for(int i = 0; i < n; i++) C[find(i)].emplace_back(i);
    for(int i = 0; i < n; i++)
        if(find(i) == i){
            V.emplace_back(i);
            for(int&x : C[i])
                for(int j = 0; j < n; j++)
                    if(p[x][j] != p[i][j]) return 0;
        }

    
    for(int& x : V)
        if(!vis[x]){
            t.clear();
            dfs(x);
            int sz = t.size();
            if(sz == 1) continue;
            if(sz == 2) return 0;
            
            for(int i = 0; i < sz; i++){
                a = t[i], b = t[(i + 1) % sz];
                E[a][b] = E[b][a] = 1;
                for(int j = 0; j < sz; j++)
                    if(i != j && p[t[i]][t[j]] != 2) return 0;
            }
        }
    build(E);
    return 1;
}

/*
int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    int n;
    cin >> n;
    vector<vector<int>> v (n, vector<int>(n, 0));
    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++) cin >> v[i][j];
    cout << construct(v) << '\n';
    return 0;
}
*/

/*
4
1 1 2 2
1 1 2 2
2 2 1 2
2 2 2 1

2
1 0
0 1

2
1 3
3 1

*/

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2004 KB Output is correct
7 Correct 164 ms 25964 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2004 KB Output is correct
7 Correct 164 ms 25964 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 7 ms 2004 KB Output is correct
13 Correct 158 ms 26020 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 4 ms 1492 KB Output is correct
17 Correct 71 ms 16076 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 40 ms 7696 KB Output is correct
21 Correct 159 ms 25932 KB Output is correct
22 Correct 158 ms 25916 KB Output is correct
23 Correct 163 ms 26024 KB Output is correct
24 Correct 160 ms 25976 KB Output is correct
25 Correct 69 ms 16048 KB Output is correct
26 Correct 69 ms 16032 KB Output is correct
27 Correct 160 ms 26016 KB Output is correct
28 Correct 169 ms 26016 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 7 ms 2080 KB Output is correct
9 Correct 163 ms 27908 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 328 KB Output is correct
12 Correct 7 ms 2048 KB Output is correct
13 Correct 158 ms 28000 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 1620 KB Output is correct
17 Correct 74 ms 18120 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 41 ms 8200 KB Output is correct
22 Correct 159 ms 28004 KB Output is correct
23 Correct 163 ms 27932 KB Output is correct
24 Correct 163 ms 27996 KB Output is correct
25 Correct 71 ms 18076 KB Output is correct
26 Correct 70 ms 17996 KB Output is correct
27 Correct 158 ms 27928 KB Output is correct
28 Correct 165 ms 27984 KB Output is correct
29 Correct 68 ms 18072 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 41 ms 7728 KB Output is correct
5 Correct 163 ms 26012 KB Output is correct
6 Correct 157 ms 25932 KB Output is correct
7 Correct 163 ms 25972 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 40 ms 7768 KB Output is correct
10 Correct 174 ms 26020 KB Output is correct
11 Correct 161 ms 26048 KB Output is correct
12 Correct 162 ms 26024 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 44 ms 7736 KB Output is correct
17 Correct 166 ms 26032 KB Output is correct
18 Correct 178 ms 26012 KB Output is correct
19 Correct 159 ms 26032 KB Output is correct
20 Correct 158 ms 26020 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2004 KB Output is correct
7 Correct 164 ms 25964 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 7 ms 2004 KB Output is correct
13 Correct 158 ms 26020 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 4 ms 1492 KB Output is correct
17 Correct 71 ms 16076 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 40 ms 7696 KB Output is correct
21 Correct 159 ms 25932 KB Output is correct
22 Correct 158 ms 25916 KB Output is correct
23 Correct 163 ms 26024 KB Output is correct
24 Correct 160 ms 25976 KB Output is correct
25 Correct 69 ms 16048 KB Output is correct
26 Correct 69 ms 16032 KB Output is correct
27 Correct 160 ms 26016 KB Output is correct
28 Correct 169 ms 26016 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 7 ms 2080 KB Output is correct
37 Correct 163 ms 27908 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 328 KB Output is correct
40 Correct 7 ms 2048 KB Output is correct
41 Correct 158 ms 28000 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 4 ms 1620 KB Output is correct
45 Correct 74 ms 18120 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 41 ms 8200 KB Output is correct
50 Correct 159 ms 28004 KB Output is correct
51 Correct 163 ms 27932 KB Output is correct
52 Correct 163 ms 27996 KB Output is correct
53 Correct 71 ms 18076 KB Output is correct
54 Correct 70 ms 17996 KB Output is correct
55 Correct 158 ms 27928 KB Output is correct
56 Correct 165 ms 27984 KB Output is correct
57 Correct 68 ms 18072 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 4 ms 1592 KB Output is correct
61 Correct 72 ms 17944 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 328 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 41 ms 8272 KB Output is correct
66 Correct 75 ms 18000 KB Output is correct
67 Correct 71 ms 18068 KB Output is correct
68 Correct 70 ms 17956 KB Output is correct
69 Correct 74 ms 18076 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2004 KB Output is correct
7 Correct 164 ms 25964 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 7 ms 2004 KB Output is correct
13 Correct 158 ms 26020 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 4 ms 1492 KB Output is correct
17 Correct 71 ms 16076 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 40 ms 7696 KB Output is correct
21 Correct 159 ms 25932 KB Output is correct
22 Correct 158 ms 25916 KB Output is correct
23 Correct 163 ms 26024 KB Output is correct
24 Correct 160 ms 25976 KB Output is correct
25 Correct 69 ms 16048 KB Output is correct
26 Correct 69 ms 16032 KB Output is correct
27 Correct 160 ms 26016 KB Output is correct
28 Correct 169 ms 26016 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 7 ms 2080 KB Output is correct
37 Correct 163 ms 27908 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 328 KB Output is correct
40 Correct 7 ms 2048 KB Output is correct
41 Correct 158 ms 28000 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 4 ms 1620 KB Output is correct
45 Correct 74 ms 18120 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 328 KB Output is correct
49 Correct 41 ms 8200 KB Output is correct
50 Correct 159 ms 28004 KB Output is correct
51 Correct 163 ms 27932 KB Output is correct
52 Correct 163 ms 27996 KB Output is correct
53 Correct 71 ms 18076 KB Output is correct
54 Correct 70 ms 17996 KB Output is correct
55 Correct 158 ms 27928 KB Output is correct
56 Correct 165 ms 27984 KB Output is correct
57 Correct 68 ms 18072 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 41 ms 7728 KB Output is correct
62 Correct 163 ms 26012 KB Output is correct
63 Correct 157 ms 25932 KB Output is correct
64 Correct 163 ms 25972 KB Output is correct
65 Correct 0 ms 340 KB Output is correct
66 Correct 40 ms 7768 KB Output is correct
67 Correct 174 ms 26020 KB Output is correct
68 Correct 161 ms 26048 KB Output is correct
69 Correct 162 ms 26024 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 0 ms 340 KB Output is correct
72 Correct 1 ms 340 KB Output is correct
73 Correct 44 ms 7736 KB Output is correct
74 Correct 166 ms 26032 KB Output is correct
75 Correct 178 ms 26012 KB Output is correct
76 Correct 159 ms 26032 KB Output is correct
77 Correct 158 ms 26020 KB Output is correct
78 Correct 1 ms 340 KB Output is correct
79 Correct 1 ms 340 KB Output is correct
80 Correct 4 ms 1592 KB Output is correct
81 Correct 72 ms 17944 KB Output is correct
82 Correct 1 ms 340 KB Output is correct
83 Correct 1 ms 328 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 41 ms 8272 KB Output is correct
86 Correct 75 ms 18000 KB Output is correct
87 Correct 71 ms 18068 KB Output is correct
88 Correct 70 ms 17956 KB Output is correct
89 Correct 74 ms 18076 KB Output is correct
90 Correct 1 ms 340 KB Output is correct
91 Correct 1 ms 340 KB Output is correct
92 Correct 4 ms 1620 KB Output is correct
93 Correct 77 ms 17956 KB Output is correct
94 Correct 1 ms 340 KB Output is correct
95 Correct 1 ms 340 KB Output is correct
96 Correct 1 ms 340 KB Output is correct
97 Correct 18 ms 5716 KB Output is correct
98 Correct 66 ms 17944 KB Output is correct
99 Correct 68 ms 17960 KB Output is correct
100 Correct 68 ms 17996 KB Output is correct
101 Correct 68 ms 17948 KB Output is correct
102 Correct 70 ms 17940 KB Output is correct
103 Correct 75 ms 17996 KB Output is correct
104 Correct 62 ms 17940 KB Output is correct
105 Correct 85 ms 17992 KB Output is correct