oj.uz

Submission #755095

# Submission time Handle Problem Language Result Execution time Memory
755095 2023-06-09T11:50:58 Z sofija6 Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 242 ms 25088 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define MAXN 1010
using namespace std;
int d[MAXN];
int Root(int p)
{
    while (d[p]!=p)
    {
        d[p]=d[d[p]];
        p=d[p];
    }
    return p;
}
void Join(int p,int q)
{
    d[Root(p)]=d[Root(q)];
}
int construct(std::vector<std::vector<int>> p) {
    int n=p.size();
    for (int i=0;i<n;i++)
    {
        d[i]=i;
        for (int j=0;j<n;j++)
        {
            if (p[i][j]==3 || p[i][j]!=p[j][i])
                return 0;
            if (i==j && p[i][j]!=1)
                return 0;
        }
    }
    vector<int> v[n+2];
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
        {
            if (p[i][j]==1)
                Join(i,j);
        }
    }
    vector<vector<int> > b;
    b.resize(n);
    for (int i=0;i<n;i++)
        b[i].resize(n);
    for (int i=0;i<n;i++)
    {
        if (i==Root(i))
            continue;
        b[i][Root(i)]=1;
        b[Root(i)][i]=1;
    }
    bool cyc[n+2][n+2];
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
            cyc[i][j]=false;
    }
    for (int i=0;i<n;i++)
    {
        for (int j=0;j<n;j++)
        {
            if (p[i][j]==2)
                cyc[Root(i)][Root(j)]=true;
        }
    }
    vector<int> root[n+2];
    for (int i=0;i<n;i++)
    {
        root[Root(i)].push_back(i);
        for (int j=0;j<n;j++)
        {
            if (!p[i][j] && (Root(i)==Root(j) || cyc[Root(i)][Root(j)]))
                return 0;
            if (p[i][j]==1 && (Root(i)!=Root(j) || cyc[Root(i)][Root(j)]))
                return 0;
            if (p[i][j]==2 && (Root(i)==Root(j) || !cyc[Root(i)][Root(j)]))
                return 0;
        }
    }
    bool vis[n+2]={false};
    for (int i=0;i<n;i++)
    {
        if (vis[i] || Root(i)!=i)
            continue;
        set<int> s;
        vector<int> v;
        int cur=i;
        while (true)
        {
            s.insert(cur);
            v.push_back(cur);
            vis[cur]=true;
            bool next=false;
            for (int j=0;j<n;j++)
            {
                if (cyc[cur][j] && !s.count(j))
                {
                    cur=j;
                    next=true;
                    break;
                }
            }
            if (!next)
                break;
        }
        if (s.size()==2)
            return 0;
        if (s.size()==1)
            continue;
        for (int j=0;j<v.size();j++)
        {
            for (int k=0;k<v.size();k++)
            {
                if (j==k)
                    continue;
                for (auto U : root[v[j]])
                {
                    for (auto V : root[v[k]])
                    {
                        if (p[U][V]!=2)
                            return 0;
                    }
                }
            }
        }
        for (int j=0;j<v.size()-1;j++)
        {
            b[v[j]][v[j+1]]=1;
            b[v[j+1]][v[j]]=1;
        }
        b[v[v.size()-1]][v[0]]=1;
        b[v[0]][v[v.size()-1]]=1;
    }
    build(b);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:110:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |         for (int j=0;j<v.size();j++)
      |                      ~^~~~~~~~~
supertrees.cpp:112:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             for (int k=0;k<v.size();k++)
      |                          ~^~~~~~~~~
supertrees.cpp:126:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  126 |         for (int j=0;j<v.size()-1;j++)
      |                      ~^~~~~~~~~~~

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 189 ms 23056 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 189 ms 23056 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 174 ms 23056 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 86 ms 13072 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 45 ms 5964 KB Output is correct
21 Correct 188 ms 23056 KB Output is correct
22 Correct 176 ms 23060 KB Output is correct
23 Correct 227 ms 23040 KB Output is correct
24 Correct 169 ms 22988 KB Output is correct
25 Correct 73 ms 13132 KB Output is correct
26 Correct 66 ms 13072 KB Output is correct
27 Correct 184 ms 23140 KB Output is correct
28 Correct 176 ms 23048 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 9 ms 1216 KB Output is correct
9 Correct 186 ms 22984 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1236 KB Output is correct
13 Correct 196 ms 23096 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 848 KB Output is correct
17 Correct 116 ms 13204 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 44 ms 5996 KB Output is correct
22 Correct 181 ms 23116 KB Output is correct
23 Correct 167 ms 23044 KB Output is correct
24 Correct 213 ms 23060 KB Output is correct
25 Correct 72 ms 13192 KB Output is correct
26 Correct 72 ms 13192 KB Output is correct
27 Correct 168 ms 24968 KB Output is correct
28 Correct 198 ms 25088 KB Output is correct
29 Correct 79 ms 15096 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 46 ms 5980 KB Output is correct
5 Correct 195 ms 22988 KB Output is correct
6 Correct 171 ms 22988 KB Output is correct
7 Correct 205 ms 23060 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 43 ms 5976 KB Output is correct
10 Correct 188 ms 23060 KB Output is correct
11 Correct 205 ms 23080 KB Output is correct
12 Correct 242 ms 23116 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 49 ms 6020 KB Output is correct
17 Correct 207 ms 23052 KB Output is correct
18 Correct 196 ms 22988 KB Output is correct
19 Correct 204 ms 23072 KB Output is correct
20 Correct 197 ms 23044 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 189 ms 23056 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 174 ms 23056 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 86 ms 13072 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 45 ms 5964 KB Output is correct
21 Correct 188 ms 23056 KB Output is correct
22 Correct 176 ms 23060 KB Output is correct
23 Correct 227 ms 23040 KB Output is correct
24 Correct 169 ms 22988 KB Output is correct
25 Correct 73 ms 13132 KB Output is correct
26 Correct 66 ms 13072 KB Output is correct
27 Correct 184 ms 23140 KB Output is correct
28 Correct 176 ms 23048 KB Output is correct
29 Correct 1 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 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 9 ms 1216 KB Output is correct
37 Correct 186 ms 22984 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 196 ms 23096 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 848 KB Output is correct
45 Correct 116 ms 13204 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 44 ms 5996 KB Output is correct
50 Correct 181 ms 23116 KB Output is correct
51 Correct 167 ms 23044 KB Output is correct
52 Correct 213 ms 23060 KB Output is correct
53 Correct 72 ms 13192 KB Output is correct
54 Correct 72 ms 13192 KB Output is correct
55 Correct 168 ms 24968 KB Output is correct
56 Correct 198 ms 25088 KB Output is correct
57 Correct 79 ms 15096 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 6 ms 852 KB Output is correct
61 Correct 100 ms 15100 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 52 ms 6488 KB Output is correct
66 Correct 82 ms 15084 KB Output is correct
67 Correct 81 ms 15100 KB Output is correct
68 Correct 82 ms 15100 KB Output is correct
69 Correct 95 ms 15096 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 189 ms 23056 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 174 ms 23056 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 86 ms 13072 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 45 ms 5964 KB Output is correct
21 Correct 188 ms 23056 KB Output is correct
22 Correct 176 ms 23060 KB Output is correct
23 Correct 227 ms 23040 KB Output is correct
24 Correct 169 ms 22988 KB Output is correct
25 Correct 73 ms 13132 KB Output is correct
26 Correct 66 ms 13072 KB Output is correct
27 Correct 184 ms 23140 KB Output is correct
28 Correct 176 ms 23048 KB Output is correct
29 Correct 1 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 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 9 ms 1216 KB Output is correct
37 Correct 186 ms 22984 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 8 ms 1236 KB Output is correct
41 Correct 196 ms 23096 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 848 KB Output is correct
45 Correct 116 ms 13204 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 44 ms 5996 KB Output is correct
50 Correct 181 ms 23116 KB Output is correct
51 Correct 167 ms 23044 KB Output is correct
52 Correct 213 ms 23060 KB Output is correct
53 Correct 72 ms 13192 KB Output is correct
54 Correct 72 ms 13192 KB Output is correct
55 Correct 168 ms 24968 KB Output is correct
56 Correct 198 ms 25088 KB Output is correct
57 Correct 79 ms 15096 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 46 ms 5980 KB Output is correct
62 Correct 195 ms 22988 KB Output is correct
63 Correct 171 ms 22988 KB Output is correct
64 Correct 205 ms 23060 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 43 ms 5976 KB Output is correct
67 Correct 188 ms 23060 KB Output is correct
68 Correct 205 ms 23080 KB Output is correct
69 Correct 242 ms 23116 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 49 ms 6020 KB Output is correct
74 Correct 207 ms 23052 KB Output is correct
75 Correct 196 ms 22988 KB Output is correct
76 Correct 204 ms 23072 KB Output is correct
77 Correct 197 ms 23044 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 6 ms 852 KB Output is correct
81 Correct 100 ms 15100 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 52 ms 6488 KB Output is correct
86 Correct 82 ms 15084 KB Output is correct
87 Correct 81 ms 15100 KB Output is correct
88 Correct 82 ms 15100 KB Output is correct
89 Correct 95 ms 15096 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 4 ms 596 KB Output is correct
93 Correct 91 ms 10104 KB Output is correct
94 Correct 1 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 19 ms 2764 KB Output is correct
98 Correct 97 ms 10104 KB Output is correct
99 Correct 70 ms 10108 KB Output is correct
100 Correct 114 ms 10036 KB Output is correct
101 Correct 70 ms 10104 KB Output is correct
102 Correct 81 ms 10108 KB Output is correct
103 Correct 67 ms 10108 KB Output is correct
104 Correct 70 ms 10068 KB Output is correct
105 Correct 78 ms 10028 KB Output is correct