oj.uz

Submission #864759

# Submission time Handle Problem Language Result Execution time Memory
864759 2023-10-23T14:33:41 Z andrei_boaca Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 206 ms 34108 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;

int n;
vector<vector<int>> adj;
vector<int> muchii[1005],edges[1005];
int comp[1005],nrcomp;
bool use[1005];
vector<int> v,nodes;
bool good=1;
vector<vector<int>> P;
void calc(int nod)
{
    use[nod]=1;
    v.push_back(nod);
    for(int i:edges[nod])
        if(!use[i])
            calc(i);
}
void dfs(int nod)
{
    nodes.push_back(nod);
    comp[nod]=nrcomp;
    for(int i:muchii[nod])
        if(!comp[i])
            dfs(i);
}
void solve()
{
    for(int i:v)
        for(int j:v)
            if(P[i][j]==0)
            {
                good=0;
                return;
            }
    vector<int> reprez;
    for(int i:v)
        for(int j:v)
            if(i!=j&&P[i][j]==1)
                muchii[i].push_back(j);
    for(int i:v)
        if(comp[i]==0)
        {
            nrcomp++;
            nodes.clear();
            dfs(i);
            reprez.push_back(nodes[0]);
            for(int j=1;j<nodes.size();j++)
            {
                int a=nodes[j-1];
                int b=nodes[j];
                adj[a][b]=1;
                adj[b][a]=1;
            }
        }
    if(reprez.size()==2)
    {
        good=0;
        return;
    }
    int lg=reprez.size();
    for(int i=0;i<reprez.size();i++)
    {
        int a=reprez[i];
        int b=reprez[(i+1)%lg];
        if(a!=b)
            adj[a][b]=adj[b][a]=1;
    }
    for(int i:v)
        for(int j:v)
            if(i!=j)
            {
                if(P[i][j]==1&&comp[i]!=comp[j])
                {
                    good=0;
                    return;
                }
                if(P[i][j]==2&&comp[i]==comp[j])
                {
                    good=0;
                    return;
                }
            }
}
int construct(std::vector<std::vector<int>> p)
{
    P=p;
    good=1;
    n=p.size();
    adj.resize(n);
    for(int i=0;i<n;i++)
        adj[i].resize(n);
    bool sub1=1;
    bool sub2=1;
    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
        {
            sub1&=(p[i][j]<=2);
            if(p[i][j]>0&&i!=j)
                edges[i].push_back(j);
        }
    if(sub1)
    {
        for(int i=0;i<n;i++)
            if(!use[i])
            {
                v.clear();
                calc(i);
                solve();
                if(good==0)
                    return 0;
            }
        build(adj);
        return 1;
    }
	return 0;
}

Compilation message

supertrees.cpp: In function 'void solve()':
supertrees.cpp:52:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |             for(int j=1;j<nodes.size();j++)
      |                         ~^~~~~~~~~~~~~
supertrees.cpp:66:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for(int i=0;i<reprez.size();i++)
      |                 ~^~~~~~~~~~~~~~
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:98:10: warning: unused variable 'sub2' [-Wunused-variable]
   98 |     bool sub2=1;
      |          ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 7 ms 1924 KB Output is correct
7 Correct 162 ms 34108 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 7 ms 1924 KB Output is correct
7 Correct 162 ms 34108 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1468 KB Output is correct
13 Correct 153 ms 26168 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 72 ms 18744 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 38 ms 6932 KB Output is correct
21 Correct 152 ms 27160 KB Output is correct
22 Correct 153 ms 26184 KB Output is correct
23 Correct 160 ms 30032 KB Output is correct
24 Correct 149 ms 26196 KB Output is correct
25 Correct 62 ms 16980 KB Output is correct
26 Correct 64 ms 16208 KB Output is correct
27 Correct 161 ms 32212 KB Output is correct
28 Correct 151 ms 26192 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 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 6 ms 1372 KB Output is correct
9 Correct 179 ms 26168 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1628 KB Output is correct
13 Correct 157 ms 30128 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1112 KB Output is correct
17 Correct 71 ms 18748 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 37 ms 6852 KB Output is correct
22 Correct 153 ms 26684 KB Output is correct
23 Correct 152 ms 26196 KB Output is correct
24 Correct 157 ms 29188 KB Output is correct
25 Correct 59 ms 16212 KB Output is correct
26 Correct 62 ms 16720 KB Output is correct
27 Correct 152 ms 26196 KB Output is correct
28 Correct 161 ms 28216 KB Output is correct
29 Correct 60 ms 16212 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 38 ms 6888 KB Output is correct
5 Correct 152 ms 27216 KB Output is correct
6 Correct 148 ms 26196 KB Output is correct
7 Correct 206 ms 30036 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 37 ms 6780 KB Output is correct
10 Correct 153 ms 26628 KB Output is correct
11 Correct 150 ms 26200 KB Output is correct
12 Correct 156 ms 29260 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 37 ms 7400 KB Output is correct
17 Correct 151 ms 28644 KB Output is correct
18 Correct 152 ms 28676 KB Output is correct
19 Correct 151 ms 28240 KB Output is correct
20 Correct 152 ms 28076 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 7 ms 1924 KB Output is correct
7 Correct 162 ms 34108 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1468 KB Output is correct
13 Correct 153 ms 26168 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 72 ms 18744 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 38 ms 6932 KB Output is correct
21 Correct 152 ms 27160 KB Output is correct
22 Correct 153 ms 26184 KB Output is correct
23 Correct 160 ms 30032 KB Output is correct
24 Correct 149 ms 26196 KB Output is correct
25 Correct 62 ms 16980 KB Output is correct
26 Correct 64 ms 16208 KB Output is correct
27 Correct 161 ms 32212 KB Output is correct
28 Correct 151 ms 26192 KB Output is correct
29 Correct 1 ms 348 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 6 ms 1372 KB Output is correct
37 Correct 179 ms 26168 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1628 KB Output is correct
41 Correct 157 ms 30128 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 1112 KB Output is correct
45 Correct 71 ms 18748 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 37 ms 6852 KB Output is correct
50 Correct 153 ms 26684 KB Output is correct
51 Correct 152 ms 26196 KB Output is correct
52 Correct 157 ms 29188 KB Output is correct
53 Correct 59 ms 16212 KB Output is correct
54 Correct 62 ms 16720 KB Output is correct
55 Correct 152 ms 26196 KB Output is correct
56 Correct 161 ms 28216 KB Output is correct
57 Correct 60 ms 16212 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 1112 KB Output is correct
61 Correct 71 ms 20304 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 488 KB Output is correct
65 Correct 37 ms 7252 KB Output is correct
66 Correct 66 ms 18744 KB Output is correct
67 Correct 64 ms 18728 KB Output is correct
68 Correct 64 ms 18260 KB Output is correct
69 Correct 61 ms 18088 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 7 ms 1924 KB Output is correct
7 Correct 162 ms 34108 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1468 KB Output is correct
13 Correct 153 ms 26168 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 72 ms 18744 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 38 ms 6932 KB Output is correct
21 Correct 152 ms 27160 KB Output is correct
22 Correct 153 ms 26184 KB Output is correct
23 Correct 160 ms 30032 KB Output is correct
24 Correct 149 ms 26196 KB Output is correct
25 Correct 62 ms 16980 KB Output is correct
26 Correct 64 ms 16208 KB Output is correct
27 Correct 161 ms 32212 KB Output is correct
28 Correct 151 ms 26192 KB Output is correct
29 Correct 1 ms 348 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 6 ms 1372 KB Output is correct
37 Correct 179 ms 26168 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1628 KB Output is correct
41 Correct 157 ms 30128 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 1112 KB Output is correct
45 Correct 71 ms 18748 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 37 ms 6852 KB Output is correct
50 Correct 153 ms 26684 KB Output is correct
51 Correct 152 ms 26196 KB Output is correct
52 Correct 157 ms 29188 KB Output is correct
53 Correct 59 ms 16212 KB Output is correct
54 Correct 62 ms 16720 KB Output is correct
55 Correct 152 ms 26196 KB Output is correct
56 Correct 161 ms 28216 KB Output is correct
57 Correct 60 ms 16212 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 38 ms 6888 KB Output is correct
62 Correct 152 ms 27216 KB Output is correct
63 Correct 148 ms 26196 KB Output is correct
64 Correct 206 ms 30036 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 37 ms 6780 KB Output is correct
67 Correct 153 ms 26628 KB Output is correct
68 Correct 150 ms 26200 KB Output is correct
69 Correct 156 ms 29260 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 37 ms 7400 KB Output is correct
74 Correct 151 ms 28644 KB Output is correct
75 Correct 152 ms 28676 KB Output is correct
76 Correct 151 ms 28240 KB Output is correct
77 Correct 152 ms 28076 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 1112 KB Output is correct
81 Correct 71 ms 20304 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 488 KB Output is correct
85 Correct 37 ms 7252 KB Output is correct
86 Correct 66 ms 18744 KB Output is correct
87 Correct 64 ms 18728 KB Output is correct
88 Correct 64 ms 18260 KB Output is correct
89 Correct 61 ms 18088 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 1372 KB Output is correct
93 Correct 73 ms 22100 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 16 ms 4956 KB Output is correct
98 Correct 62 ms 18652 KB Output is correct
99 Correct 62 ms 18728 KB Output is correct
100 Correct 71 ms 18356 KB Output is correct
101 Correct 61 ms 18168 KB Output is correct
102 Correct 67 ms 22100 KB Output is correct
103 Correct 66 ms 22100 KB Output is correct
104 Correct 65 ms 22100 KB Output is correct
105 Correct 72 ms 20520 KB Output is correct