oj.uz

Submission #1066032

# Submission time Handle Problem Language Result Execution time Memory
1066032 2024-08-19T14:16:12 Z kkkkkkkk Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 130 ms 24148 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

int parent[1005], sz[1005];

int Find(int x) {
    if (x==parent[x])
        return x;
    return parent[x]=Find(parent[x]);
}

void Union(int a, int b) {
    a=Find(a), b=Find(b);
    if (a==b) return;
    if (sz[a]<sz[b])
        swap(a, b);
    sz[a]+=sz[b];
    parent[b]=a;
}

int construct(vector<vector<int> > paths) {
    int n=paths.size();
    vector<vector<int> > a=paths;
    for (int i=0;i<n;i++)
        sz[i]=1, parent[i]=i;
    for (int i=0;i<n;i++)
        for (int j=0;j<n;j++)
            a[i][j]=0;
    bool vtor_subtask=true;
    for (int i=0;i<n;i++) {
        for (int j=i+1;j<n;j++) {
            if (paths[i][j]) Union(i, j);
            if (paths[i][j]==2) vtor_subtask=false;
        }
    }
    vector<int> gr[n];
    for (int i=0;i<n;i++) {
        int lider=Find(i);
        gr[lider].push_back(i);
    }
    for (int i=0;i<n;i++) {
        if (gr[i].size()) {
            for (auto x:gr[i])
                for (auto y:gr[i])
                    if (!paths[x][y])
                        return 0;
            if (vtor_subtask) {
                int x=gr[i][0];
                for (auto y:gr[i])
                    if (x!=y) a[x][y]=1, a[y][x]=1;
            }
            else {
                if (gr[i].size()==2) return 0;
                if (gr[i].size()==1) continue;
                int x=gr[i][0], y=gr[i][gr[i].size()-1];
                for (int j=0;j<gr[i].size()-1;j++)
                    a[gr[i][j]][gr[i][j+1]]=1, a[gr[i][j+1]][gr[i][j]]=1;
                a[x][y]=1, a[y][x]=1;
            }
        }
    }
    build(a);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:58:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |                 for (int j=0;j<gr[i].size()-1;j++)
      |                              ~^~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 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 5 ms 1372 KB Output is correct
7 Correct 113 ms 23928 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 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 5 ms 1372 KB Output is correct
7 Correct 113 ms 23928 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 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 5 ms 1192 KB Output is correct
13 Correct 111 ms 23936 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 59 ms 13868 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 28 ms 6300 KB Output is correct
21 Correct 113 ms 23972 KB Output is correct
22 Correct 114 ms 24000 KB Output is correct
23 Correct 121 ms 23892 KB Output is correct
24 Correct 120 ms 23808 KB Output is correct
25 Correct 51 ms 13904 KB Output is correct
26 Correct 50 ms 13908 KB Output is correct
27 Correct 119 ms 23888 KB Output is correct
28 Correct 117 ms 23892 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 440 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 5 ms 1392 KB Output is correct
9 Correct 111 ms 23892 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 1368 KB Output is correct
13 Correct 113 ms 23788 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 14052 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 30 ms 6340 KB Output is correct
22 Correct 114 ms 24148 KB Output is correct
23 Correct 121 ms 24076 KB Output is correct
24 Correct 130 ms 24148 KB Output is correct
25 Correct 56 ms 14256 KB Output is correct
26 Correct 54 ms 14164 KB Output is correct
27 Correct 113 ms 24080 KB Output is correct
28 Correct 119 ms 23944 KB Output is correct
29 Correct 50 ms 14164 KB Output is correct

Subtask #4
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 30 ms 6220 KB Output is correct
5 Correct 119 ms 23808 KB Output is correct
6 Correct 114 ms 23884 KB Output is correct
7 Correct 121 ms 23888 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 30 ms 6220 KB Output is correct
10 Correct 115 ms 24148 KB Output is correct
11 Correct 112 ms 23892 KB Output is correct
12 Correct 122 ms 24144 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Incorrect 0 ms 348 KB Too many ways to get from 4 to 8, should be 1 found no less than 2
15 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 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 5 ms 1372 KB Output is correct
7 Correct 113 ms 23928 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 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 5 ms 1192 KB Output is correct
13 Correct 111 ms 23936 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 59 ms 13868 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 28 ms 6300 KB Output is correct
21 Correct 113 ms 23972 KB Output is correct
22 Correct 114 ms 24000 KB Output is correct
23 Correct 121 ms 23892 KB Output is correct
24 Correct 120 ms 23808 KB Output is correct
25 Correct 51 ms 13904 KB Output is correct
26 Correct 50 ms 13908 KB Output is correct
27 Correct 119 ms 23888 KB Output is correct
28 Correct 117 ms 23892 KB Output is correct
29 Correct 0 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 440 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1392 KB Output is correct
37 Correct 111 ms 23892 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 1368 KB Output is correct
41 Correct 113 ms 23788 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 65 ms 14052 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 30 ms 6340 KB Output is correct
50 Correct 114 ms 24148 KB Output is correct
51 Correct 121 ms 24076 KB Output is correct
52 Correct 130 ms 24148 KB Output is correct
53 Correct 56 ms 14256 KB Output is correct
54 Correct 54 ms 14164 KB Output is correct
55 Correct 113 ms 24080 KB Output is correct
56 Correct 119 ms 23944 KB Output is correct
57 Correct 50 ms 14164 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 59 ms 14204 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Incorrect 1 ms 348 KB Too many ways to get from 0 to 9, should be 1 found no less than 2
64 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 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 5 ms 1372 KB Output is correct
7 Correct 113 ms 23928 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 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 5 ms 1192 KB Output is correct
13 Correct 111 ms 23936 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 59 ms 13868 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 28 ms 6300 KB Output is correct
21 Correct 113 ms 23972 KB Output is correct
22 Correct 114 ms 24000 KB Output is correct
23 Correct 121 ms 23892 KB Output is correct
24 Correct 120 ms 23808 KB Output is correct
25 Correct 51 ms 13904 KB Output is correct
26 Correct 50 ms 13908 KB Output is correct
27 Correct 119 ms 23888 KB Output is correct
28 Correct 117 ms 23892 KB Output is correct
29 Correct 0 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 440 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 5 ms 1392 KB Output is correct
37 Correct 111 ms 23892 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 1368 KB Output is correct
41 Correct 113 ms 23788 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 344 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 65 ms 14052 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 30 ms 6340 KB Output is correct
50 Correct 114 ms 24148 KB Output is correct
51 Correct 121 ms 24076 KB Output is correct
52 Correct 130 ms 24148 KB Output is correct
53 Correct 56 ms 14256 KB Output is correct
54 Correct 54 ms 14164 KB Output is correct
55 Correct 113 ms 24080 KB Output is correct
56 Correct 119 ms 23944 KB Output is correct
57 Correct 50 ms 14164 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 30 ms 6220 KB Output is correct
62 Correct 119 ms 23808 KB Output is correct
63 Correct 114 ms 23884 KB Output is correct
64 Correct 121 ms 23888 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 30 ms 6220 KB Output is correct
67 Correct 115 ms 24148 KB Output is correct
68 Correct 112 ms 23892 KB Output is correct
69 Correct 122 ms 24144 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Incorrect 0 ms 348 KB Too many ways to get from 4 to 8, should be 1 found no less than 2
72 Halted 0 ms 0 KB -