oj.uz

Submission #758911

# Submission time Handle Problem Language Result Execution time Memory
758911 2023-06-15T13:52:33 Z 1bin Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 194 ms 28008 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;
            
            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 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1984 KB Output is correct
7 Correct 192 ms 27924 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1984 KB Output is correct
7 Correct 192 ms 27924 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 2004 KB Output is correct
13 Correct 194 ms 27904 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 79 ms 18008 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 41 ms 8156 KB Output is correct
21 Correct 162 ms 27920 KB Output is correct
22 Correct 178 ms 27940 KB Output is correct
23 Correct 167 ms 27980 KB Output is correct
24 Correct 170 ms 27932 KB Output is correct
25 Correct 71 ms 17948 KB Output is correct
26 Correct 71 ms 18076 KB Output is correct
27 Correct 164 ms 27932 KB Output is correct
28 Correct 160 ms 27980 KB Output is correct

Subtask #3
0 / 19.0

# 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 Incorrect 0 ms 340 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# 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 41 ms 8220 KB Output is correct
5 Correct 174 ms 27920 KB Output is correct
6 Correct 180 ms 27864 KB Output is correct
7 Correct 164 ms 27932 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 40 ms 8264 KB Output is correct
10 Correct 179 ms 27952 KB Output is correct
11 Correct 162 ms 28008 KB Output is correct
12 Correct 166 ms 27924 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 43 ms 8200 KB Output is correct
17 Correct 174 ms 27936 KB Output is correct
18 Correct 164 ms 27972 KB Output is correct
19 Correct 163 ms 27932 KB Output is correct
20 Correct 163 ms 27992 KB Output is correct

Subtask #5
0 / 21.0

# 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 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1984 KB Output is correct
7 Correct 192 ms 27924 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 2004 KB Output is correct
13 Correct 194 ms 27904 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 79 ms 18008 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 41 ms 8156 KB Output is correct
21 Correct 162 ms 27920 KB Output is correct
22 Correct 178 ms 27940 KB Output is correct
23 Correct 167 ms 27980 KB Output is correct
24 Correct 170 ms 27932 KB Output is correct
25 Correct 71 ms 17948 KB Output is correct
26 Correct 71 ms 18076 KB Output is correct
27 Correct 164 ms 27932 KB Output is correct
28 Correct 160 ms 27980 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Incorrect 0 ms 340 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 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 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 8 ms 1984 KB Output is correct
7 Correct 192 ms 27924 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 8 ms 2004 KB Output is correct
13 Correct 194 ms 27904 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 79 ms 18008 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 41 ms 8156 KB Output is correct
21 Correct 162 ms 27920 KB Output is correct
22 Correct 178 ms 27940 KB Output is correct
23 Correct 167 ms 27980 KB Output is correct
24 Correct 170 ms 27932 KB Output is correct
25 Correct 71 ms 17948 KB Output is correct
26 Correct 71 ms 18076 KB Output is correct
27 Correct 164 ms 27932 KB Output is correct
28 Correct 160 ms 27980 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Incorrect 0 ms 340 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -