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Submission #525345

# Submission time Handle Problem Language Result Execution time Memory
525345 2022-02-11T11:39:27 Z byunjaewoo Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 197 ms 33144 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
 
const int Nmax=1010;
int N, A[Nmax][Nmax];
int G[Nmax], cnt, P[Nmax], dist[Nmax];
bool ans[Nmax][Nmax], chk[Nmax];
vector<int> nodes, V[Nmax], adj[Nmax], adj2[Nmax];
 
int Find(int x) {return G[x]?G[x]=Find(G[x]):x;}
void Union(int x, int y) {
    x=Find(x), y=Find(y);
    if(x==y) return;
    G[x]=y;
}
 
void DFS(int curr) {
    nodes.push_back(curr);
    for(int next:adj[curr]) if(!P[next]) {
        ans[curr][next]=ans[next][curr]=1;
        P[next]=cnt;
        DFS(next);
    }
}
 
void DFS2(int curr) {
    for(int next:adj[curr]) if(!chk[next]) {
        chk[next]=1;
        dist[next]++;
        DFS2(next);
        chk[next]=0;
    }
}
 
int construct(vector<vector<int>> p) {
    N=p.size();
    for(int i=1; i<=N; i++) for(int j=1; j<=N; j++) {
        A[i][j]=p[i-1][j-1];
        if(A[i][j]==3) {cerr<<0; return 0;}
    }
    for(int i=1; i<=N; i++) {
        for(int j=1; j<i; j++) if(A[i][j]) Union(i, j);
    }
    for(int i=1; i<=N; i++) {
        for(int j=1; j<i; j++) if(!A[i][j] && Find(i)==Find(j)) return 0;
    }
    for(int i=1; i<=N; i++) V[Find(i)].push_back(i);
    for(int i=1; i<=N; i++) {
        if(V[i].empty()) continue;
        for(int j:V[i]) for(int k:V[i]) if(j!=k && A[j][k]==1) {
            adj[j].push_back(k);
        }
        vector<int> tmp;
        for(int j:V[i]) if(!P[j]) {
            nodes.clear();
            P[j]=++cnt;
            DFS(j);
            for(int k:nodes) for(int l:nodes) if(A[k][l]==2) return 0;
            tmp.push_back(j);
        }
        if(tmp.size()==2) return 0;
        for(int j=0; j<(int)tmp.size()-1; j++) ans[tmp[j]][tmp[j+1]]=ans[tmp[j+1]][tmp[j]]=1;
        if(tmp.size()>1) ans[tmp.back()][tmp[0]]=ans[tmp[0]][tmp.back()]=1;
    }
    vector<vector<int>> tmp;
    tmp.resize(N);
    for(int i=1; i<=N; i++) for(int j=1; j<=N; j++) tmp[i-1].push_back(ans[i][j]);
    build(tmp);
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 372 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2552 KB Output is correct
7 Correct 173 ms 33144 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 372 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2552 KB Output is correct
7 Correct 173 ms 33144 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 368 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 2168 KB Output is correct
13 Correct 168 ms 28056 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1540 KB Output is correct
17 Correct 75 ms 14140 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 45 ms 8772 KB Output is correct
21 Correct 176 ms 29696 KB Output is correct
22 Correct 170 ms 29112 KB Output is correct
23 Correct 182 ms 31176 KB Output is correct
24 Correct 164 ms 28356 KB Output is correct
25 Correct 74 ms 14140 KB Output is correct
26 Correct 72 ms 14136 KB Output is correct
27 Correct 182 ms 32160 KB Output is correct
28 Correct 167 ms 28352 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 11 ms 2140 KB Output is correct
9 Correct 173 ms 28100 KB Output is correct
10 Correct 1 ms 372 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 2380 KB Output is correct
13 Correct 168 ms 29048 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1508 KB Output is correct
17 Correct 82 ms 14136 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 43 ms 8752 KB Output is correct
22 Correct 168 ms 29048 KB Output is correct
23 Correct 171 ms 29044 KB Output is correct
24 Correct 190 ms 29048 KB Output is correct
25 Correct 73 ms 14276 KB Output is correct
26 Correct 76 ms 14072 KB Output is correct
27 Correct 197 ms 29048 KB Output is correct
28 Correct 186 ms 29036 KB Output is correct
29 Correct 64 ms 14272 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 368 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 45 ms 8880 KB Output is correct
5 Correct 169 ms 29644 KB Output is correct
6 Correct 163 ms 29144 KB Output is correct
7 Correct 193 ms 31172 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 56 ms 8768 KB Output is correct
10 Correct 166 ms 29124 KB Output is correct
11 Correct 169 ms 29144 KB Output is correct
12 Correct 176 ms 29112 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 43 ms 8808 KB Output is correct
17 Correct 191 ms 29024 KB Output is correct
18 Correct 174 ms 29112 KB Output is correct
19 Correct 168 ms 29256 KB Output is correct
20 Correct 168 ms 28316 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 372 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2552 KB Output is correct
7 Correct 173 ms 33144 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 368 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 2168 KB Output is correct
13 Correct 168 ms 28056 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1540 KB Output is correct
17 Correct 75 ms 14140 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 45 ms 8772 KB Output is correct
21 Correct 176 ms 29696 KB Output is correct
22 Correct 170 ms 29112 KB Output is correct
23 Correct 182 ms 31176 KB Output is correct
24 Correct 164 ms 28356 KB Output is correct
25 Correct 74 ms 14140 KB Output is correct
26 Correct 72 ms 14136 KB Output is correct
27 Correct 182 ms 32160 KB Output is correct
28 Correct 167 ms 28352 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 0 ms 364 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 11 ms 2140 KB Output is correct
37 Correct 173 ms 28100 KB Output is correct
38 Correct 1 ms 372 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 8 ms 2380 KB Output is correct
41 Correct 168 ms 29048 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 4 ms 1508 KB Output is correct
45 Correct 82 ms 14136 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 0 ms 332 KB Output is correct
49 Correct 43 ms 8752 KB Output is correct
50 Correct 168 ms 29048 KB Output is correct
51 Correct 171 ms 29044 KB Output is correct
52 Correct 190 ms 29048 KB Output is correct
53 Correct 73 ms 14276 KB Output is correct
54 Correct 76 ms 14072 KB Output is correct
55 Correct 197 ms 29048 KB Output is correct
56 Correct 186 ms 29036 KB Output is correct
57 Correct 64 ms 14272 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 4 ms 1484 KB Output is correct
61 Correct 74 ms 14156 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 0 ms 332 KB Output is correct
65 Correct 43 ms 8752 KB Output is correct
66 Correct 65 ms 14144 KB Output is correct
67 Correct 66 ms 14140 KB Output is correct
68 Correct 69 ms 14152 KB Output is correct
69 Correct 71 ms 14148 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 372 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 11 ms 2552 KB Output is correct
7 Correct 173 ms 33144 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 368 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 8 ms 2168 KB Output is correct
13 Correct 168 ms 28056 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 1540 KB Output is correct
17 Correct 75 ms 14140 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 45 ms 8772 KB Output is correct
21 Correct 176 ms 29696 KB Output is correct
22 Correct 170 ms 29112 KB Output is correct
23 Correct 182 ms 31176 KB Output is correct
24 Correct 164 ms 28356 KB Output is correct
25 Correct 74 ms 14140 KB Output is correct
26 Correct 72 ms 14136 KB Output is correct
27 Correct 182 ms 32160 KB Output is correct
28 Correct 167 ms 28352 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 0 ms 364 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 11 ms 2140 KB Output is correct
37 Correct 173 ms 28100 KB Output is correct
38 Correct 1 ms 372 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 8 ms 2380 KB Output is correct
41 Correct 168 ms 29048 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 4 ms 1508 KB Output is correct
45 Correct 82 ms 14136 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 0 ms 332 KB Output is correct
49 Correct 43 ms 8752 KB Output is correct
50 Correct 168 ms 29048 KB Output is correct
51 Correct 171 ms 29044 KB Output is correct
52 Correct 190 ms 29048 KB Output is correct
53 Correct 73 ms 14276 KB Output is correct
54 Correct 76 ms 14072 KB Output is correct
55 Correct 197 ms 29048 KB Output is correct
56 Correct 186 ms 29036 KB Output is correct
57 Correct 64 ms 14272 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 0 ms 368 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 45 ms 8880 KB Output is correct
62 Correct 169 ms 29644 KB Output is correct
63 Correct 163 ms 29144 KB Output is correct
64 Correct 193 ms 31172 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 56 ms 8768 KB Output is correct
67 Correct 166 ms 29124 KB Output is correct
68 Correct 169 ms 29144 KB Output is correct
69 Correct 176 ms 29112 KB Output is correct
70 Correct 0 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 43 ms 8808 KB Output is correct
74 Correct 191 ms 29024 KB Output is correct
75 Correct 174 ms 29112 KB Output is correct
76 Correct 168 ms 29256 KB Output is correct
77 Correct 168 ms 28316 KB Output is correct
78 Correct 1 ms 332 KB Output is correct
79 Correct 1 ms 332 KB Output is correct
80 Correct 4 ms 1484 KB Output is correct
81 Correct 74 ms 14156 KB Output is correct
82 Correct 1 ms 332 KB Output is correct
83 Correct 1 ms 332 KB Output is correct
84 Correct 0 ms 332 KB Output is correct
85 Correct 43 ms 8752 KB Output is correct
86 Correct 65 ms 14144 KB Output is correct
87 Correct 66 ms 14140 KB Output is correct
88 Correct 69 ms 14152 KB Output is correct
89 Correct 71 ms 14148 KB Output is correct
90 Correct 1 ms 332 KB Output is correct
91 Correct 1 ms 372 KB Output is correct
92 Correct 4 ms 764 KB Output is correct
93 Correct 72 ms 10176 KB Output is correct
94 Correct 1 ms 376 KB Output is correct
95 Correct 1 ms 372 KB Output is correct
96 Correct 0 ms 332 KB Output is correct
97 Correct 16 ms 2876 KB Output is correct
98 Correct 63 ms 10432 KB Output is correct
99 Correct 70 ms 10692 KB Output is correct
100 Correct 61 ms 10436 KB Output is correct
101 Correct 68 ms 11460 KB Output is correct
102 Correct 61 ms 10172 KB Output is correct
103 Correct 63 ms 10176 KB Output is correct
104 Correct 61 ms 10176 KB Output is correct
105 Correct 69 ms 10176 KB Output is correct