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Submission #1041893

# Submission time Handle Problem Language Result Execution time Memory
1041893 2024-08-02T09:36:01 Z MarwenElarbi Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 128 ms 26200 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
#define pb push_back
const int nax=1005;
vector<int> adj[nax];
vector<int> comp[nax];
int parent[nax];
int find(int x){
    if(x==parent[x]) return x;
    return parent[x]=find(parent[x]);
}
bool sameset(int x,int y){
    return find(x)==find(y);
}
void joinset(int x,int y){
    x=find(x);
    y=find(y);
    if(comp[y].size()<comp[x].size()) swap(comp[x],comp[y]);
    for(auto u:comp[x]) comp[y].pb(u);
    parent[x]=y;
}
int construct(std::vector<std::vector<int>> p) {
    int n = p.size();
    std::vector<std::vector<int>> ans(n,vector<int> (n,0));
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if(i==j) continue;
            if(p[i][j]>0) adj[i].pb(j);
        }
    }
    for (int i = 0; i < n; ++i)
    {
        parent[i]=i;
    }
    for (int i = 0; i < n; ++i)
    {
        for(auto u:adj[i])
            if(!sameset(u,i)) joinset(u,i);
    }
    bool test=true;
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if(i==j) continue;
            if(p[i][j]==3) test=false;
            if(p[i][j]==0&&sameset(i,j)) test=false;
        }
    }
    if(!test) return test;
    for (int i = 0; i < n; ++i)
    {
        parent[i]=i;
        adj[i].clear();
    }
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if(i==j) continue;
            if(p[i][j]==1&&!sameset(j,i)){
                adj[i].pb(j);
                adj[j].pb(i);
                joinset(j,i);
            }
        }
    }
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if(i==j) continue;
            if(p[i][j]==2&&sameset(i,j)) test=false;
        }
    }
    if(!test) return test;
    for (int i = 0; i < n; ++i)
    {
        if(comp[find(i)].empty()) comp[find(i)].pb(find(i));
    }
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if(i==j) continue;
            if(p[i][j]==2&&!sameset(i,j)){
                joinset(i,j);
            }
        }
    }
    bool vis[n];
    memset(vis,0,sizeof vis);
    for (int i = 0; i < n; ++i)
    {
        if(!vis[find(i)]){
            int x=find(i);
            vis[x]=true;
            if(comp[x].size()==1) continue;
            if(comp[x].size()==2){
                test=false;
                break;
            }
            for (int j = 0; j < comp[x].size(); ++j)
            {
                adj[comp[x][j]].pb(comp[x][(j+1)%(int)comp[x].size()]);
                adj[comp[x][(j+1)%(int)comp[x].size()]].pb(comp[x][j]);
            }
        }
    }
    if(!test) return 0;
    for (int i = 0; i < n; ++i)
    {
        for(auto u:adj[i]) ans[i][u]=1;
    }
    build(ans);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:106:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |             for (int j = 0; j < comp[x].size(); ++j)
      |                             ~~^~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1372 KB Output is correct
7 Correct 107 ms 26200 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1372 KB Output is correct
7 Correct 107 ms 26200 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 100 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 2 ms 860 KB Output is correct
17 Correct 61 ms 14668 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 5968 KB Output is correct
21 Correct 105 ms 22612 KB Output is correct
22 Correct 102 ms 22100 KB Output is correct
23 Correct 110 ms 24144 KB Output is correct
24 Correct 102 ms 22096 KB Output is correct
25 Correct 47 ms 12628 KB Output is correct
26 Correct 58 ms 12104 KB Output is correct
27 Correct 128 ms 25172 KB Output is correct
28 Correct 99 ms 22100 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 0 ms 348 KB Output is correct
8 Correct 4 ms 1372 KB Output is correct
9 Correct 120 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 5 ms 1372 KB Output is correct
13 Correct 113 ms 26184 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 60 ms 14652 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 27 ms 5848 KB Output is correct
22 Correct 103 ms 22616 KB Output is correct
23 Correct 108 ms 22096 KB Output is correct
24 Correct 112 ms 25168 KB Output is correct
25 Correct 45 ms 12108 KB Output is correct
26 Correct 47 ms 12604 KB Output is correct
27 Correct 105 ms 22096 KB Output is correct
28 Correct 109 ms 24148 KB Output is correct
29 Correct 46 ms 12116 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 25 ms 5836 KB Output is correct
5 Correct 106 ms 22560 KB Output is correct
6 Correct 102 ms 22096 KB Output is correct
7 Correct 110 ms 24124 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 25 ms 5840 KB Output is correct
10 Correct 101 ms 22612 KB Output is correct
11 Correct 99 ms 22096 KB Output is correct
12 Correct 111 ms 25172 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 27 ms 5836 KB Output is correct
17 Correct 102 ms 22560 KB Output is correct
18 Correct 111 ms 22608 KB Output is correct
19 Correct 101 ms 22244 KB Output is correct
20 Correct 98 ms 22092 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1372 KB Output is correct
7 Correct 107 ms 26200 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 100 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 2 ms 860 KB Output is correct
17 Correct 61 ms 14668 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 5968 KB Output is correct
21 Correct 105 ms 22612 KB Output is correct
22 Correct 102 ms 22100 KB Output is correct
23 Correct 110 ms 24144 KB Output is correct
24 Correct 102 ms 22096 KB Output is correct
25 Correct 47 ms 12628 KB Output is correct
26 Correct 58 ms 12104 KB Output is correct
27 Correct 128 ms 25172 KB Output is correct
28 Correct 99 ms 22100 KB Output is correct
29 Correct 0 ms 344 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 0 ms 348 KB Output is correct
36 Correct 4 ms 1372 KB Output is correct
37 Correct 120 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 5 ms 1372 KB Output is correct
41 Correct 113 ms 26184 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 60 ms 14652 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 27 ms 5848 KB Output is correct
50 Correct 103 ms 22616 KB Output is correct
51 Correct 108 ms 22096 KB Output is correct
52 Correct 112 ms 25168 KB Output is correct
53 Correct 45 ms 12108 KB Output is correct
54 Correct 47 ms 12604 KB Output is correct
55 Correct 105 ms 22096 KB Output is correct
56 Correct 109 ms 24148 KB Output is correct
57 Correct 46 ms 12116 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 3 ms 1116 KB Output is correct
61 Correct 57 ms 16204 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 25 ms 5968 KB Output is correct
66 Correct 51 ms 12880 KB Output is correct
67 Correct 48 ms 12624 KB Output is correct
68 Correct 45 ms 12368 KB Output is correct
69 Correct 46 ms 12112 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 1372 KB Output is correct
7 Correct 107 ms 26200 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 100 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 2 ms 860 KB Output is correct
17 Correct 61 ms 14668 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 30 ms 5968 KB Output is correct
21 Correct 105 ms 22612 KB Output is correct
22 Correct 102 ms 22100 KB Output is correct
23 Correct 110 ms 24144 KB Output is correct
24 Correct 102 ms 22096 KB Output is correct
25 Correct 47 ms 12628 KB Output is correct
26 Correct 58 ms 12104 KB Output is correct
27 Correct 128 ms 25172 KB Output is correct
28 Correct 99 ms 22100 KB Output is correct
29 Correct 0 ms 344 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 0 ms 348 KB Output is correct
36 Correct 4 ms 1372 KB Output is correct
37 Correct 120 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 5 ms 1372 KB Output is correct
41 Correct 113 ms 26184 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 60 ms 14652 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 27 ms 5848 KB Output is correct
50 Correct 103 ms 22616 KB Output is correct
51 Correct 108 ms 22096 KB Output is correct
52 Correct 112 ms 25168 KB Output is correct
53 Correct 45 ms 12108 KB Output is correct
54 Correct 47 ms 12604 KB Output is correct
55 Correct 105 ms 22096 KB Output is correct
56 Correct 109 ms 24148 KB Output is correct
57 Correct 46 ms 12116 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 25 ms 5836 KB Output is correct
62 Correct 106 ms 22560 KB Output is correct
63 Correct 102 ms 22096 KB Output is correct
64 Correct 110 ms 24124 KB Output is correct
65 Correct 1 ms 344 KB Output is correct
66 Correct 25 ms 5840 KB Output is correct
67 Correct 101 ms 22612 KB Output is correct
68 Correct 99 ms 22096 KB Output is correct
69 Correct 111 ms 25172 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 27 ms 5836 KB Output is correct
74 Correct 102 ms 22560 KB Output is correct
75 Correct 111 ms 22608 KB Output is correct
76 Correct 101 ms 22244 KB Output is correct
77 Correct 98 ms 22092 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 1 ms 344 KB Output is correct
80 Correct 3 ms 1116 KB Output is correct
81 Correct 57 ms 16204 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 25 ms 5968 KB Output is correct
86 Correct 51 ms 12880 KB Output is correct
87 Correct 48 ms 12624 KB Output is correct
88 Correct 45 ms 12368 KB Output is correct
89 Correct 46 ms 12112 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 1 ms 348 KB Output is correct
92 Correct 3 ms 1116 KB Output is correct
93 Correct 58 ms 16348 KB Output is correct
94 Correct 0 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 11 ms 3896 KB Output is correct
98 Correct 47 ms 14780 KB Output is correct
99 Correct 47 ms 14672 KB Output is correct
100 Correct 47 ms 14400 KB Output is correct
101 Correct 51 ms 14140 KB Output is correct
102 Correct 51 ms 18260 KB Output is correct
103 Correct 56 ms 18300 KB Output is correct
104 Correct 54 ms 18256 KB Output is correct
105 Correct 63 ms 16720 KB Output is correct