oj.uz

Submission #314065

# Submission time Handle Problem Language Result Execution time Memory
314065 2020-10-18T05:13:08 Z linear00000 Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 263 ms 22392 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

vector<vector<int> > d;
vector<int> C[1004];

int par[1004], num = 0;

int findpar(int N) {
	if (N == par[N]) return N;
	else return par[N] = findpar(par[N]);
}

void merge(int a, int b) {
	int aa = findpar(a), bb = findpar(b);
	par[aa] = bb;
}

int construct(vector<vector<int> > v) {
    int n = v.size();
    for (int i = 0; i < n; i++) par[i] = i;
    d.resize(n);
    for (int i = 0; i < n; i++) d[i].resize(n);

    // checking
    int type = 0;

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (v[i][j] == 2) {
                type = 2;
                break;
            }
            if (v[i][j] == 1) type = 1;
        }
        if (type == 2) break;
    }

    // checking ends
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            if (v[i][j] == 2 && i != j) merge(i, j);
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            if (v[i][j] == 0) {
                if (findpar(i) == findpar(j)) return 0;
            }
        }
    }
    for (int i = 0; i < n; i++) par[i] = findpar(i);
    for (int i = 0; i < n; i++) C[par[i]].push_back(i);
    for (int i = 0; i < n; i++) {
        int cnt = 0;
        if (C[i].size() == 2) return 0;
        else if (C[i].size() >= 3) {
            for (int j = 0; j < C[i].size() - 1; j++) {
                d[C[i][j]][C[i][j + 1]] = 1, d[C[i][j + 1]][C[i][j]] = 1;
            }
            d[C[i][C[i].size() - 1]][C[i][0]] = 1, d[C[i][0]][C[i][C[i].size() - 1]] = 1;
        }
    }
    for (int i=0; i<n; i++) par[i] = i, C[i].clear();
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            if (v[i][j] == 1 && i != j) merge(i, j);
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            if (v[i][j] == 0) {
                if (findpar(i) == findpar(j)) return 0;
            }
        }
    }
    for (int i = 0; i < n; i++) par[i] = findpar(i);
    for (int i = 0; i < n; i++) C[par[i]].push_back(i);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < C[i].size(); j++) {
            if (C[i][j] != i) d[i][C[i][j]] = 1, d[C[i][j]][i] = 1;
        }
    }
    build(d);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:60:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |             for (int j = 0; j < C[i].size() - 1; j++) {
      |                             ~~^~~~~~~~~~~~~~~~~
supertrees.cpp:57:13: warning: unused variable 'cnt' [-Wunused-variable]
   57 |         int cnt = 0;
      |             ^~~
supertrees.cpp:82:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |         for (int j = 0; j < C[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 10 ms 1280 KB Output is correct
7 Correct 237 ms 22284 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 10 ms 1280 KB Output is correct
7 Correct 237 ms 22284 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 238 ms 22264 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 116 ms 12276 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 59 ms 5864 KB Output is correct
21 Correct 236 ms 22136 KB Output is correct
22 Correct 263 ms 22136 KB Output is correct
23 Correct 247 ms 22136 KB Output is correct
24 Correct 234 ms 22392 KB Output is correct
25 Correct 101 ms 12280 KB Output is correct
26 Correct 119 ms 12152 KB Output is correct
27 Correct 245 ms 22136 KB Output is correct
28 Correct 238 ms 22136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 11 ms 1280 KB Output is correct
9 Correct 246 ms 22136 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 12 ms 1280 KB Output is correct
13 Correct 235 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 110 ms 12152 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 59 ms 5896 KB Output is correct
22 Correct 236 ms 22136 KB Output is correct
23 Correct 237 ms 22136 KB Output is correct
24 Correct 244 ms 22136 KB Output is correct
25 Correct 102 ms 12272 KB Output is correct
26 Correct 99 ms 12152 KB Output is correct
27 Correct 237 ms 22136 KB Output is correct
28 Correct 250 ms 22136 KB Output is correct
29 Correct 101 ms 12152 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 62 ms 5880 KB Output is correct
5 Correct 238 ms 22256 KB Output is correct
6 Correct 233 ms 22136 KB Output is correct
7 Correct 247 ms 22264 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 59 ms 5880 KB Output is correct
10 Correct 241 ms 22168 KB Output is correct
11 Correct 240 ms 22136 KB Output is correct
12 Correct 251 ms 22136 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Incorrect 0 ms 384 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
16 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 10 ms 1280 KB Output is correct
7 Correct 237 ms 22284 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 238 ms 22264 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 116 ms 12276 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 59 ms 5864 KB Output is correct
21 Correct 236 ms 22136 KB Output is correct
22 Correct 263 ms 22136 KB Output is correct
23 Correct 247 ms 22136 KB Output is correct
24 Correct 234 ms 22392 KB Output is correct
25 Correct 101 ms 12280 KB Output is correct
26 Correct 119 ms 12152 KB Output is correct
27 Correct 245 ms 22136 KB Output is correct
28 Correct 238 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 11 ms 1280 KB Output is correct
37 Correct 246 ms 22136 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 12 ms 1280 KB Output is correct
41 Correct 235 ms 22136 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 0 ms 384 KB Output is correct
44 Correct 5 ms 768 KB Output is correct
45 Correct 110 ms 12152 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 59 ms 5896 KB Output is correct
50 Correct 236 ms 22136 KB Output is correct
51 Correct 237 ms 22136 KB Output is correct
52 Correct 244 ms 22136 KB Output is correct
53 Correct 102 ms 12272 KB Output is correct
54 Correct 99 ms 12152 KB Output is correct
55 Correct 237 ms 22136 KB Output is correct
56 Correct 250 ms 22136 KB Output is correct
57 Correct 101 ms 12152 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 5 ms 768 KB Output is correct
61 Correct 106 ms 12144 KB Output is correct
62 Correct 1 ms 384 KB Output is correct
63 Correct 0 ms 384 KB Output is correct
64 Correct 1 ms 384 KB Output is correct
65 Incorrect 60 ms 5880 KB Too many ways to get from 1 to 477, should be 2 found no less than 3
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 10 ms 1280 KB Output is correct
7 Correct 237 ms 22284 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 238 ms 22264 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 116 ms 12276 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 59 ms 5864 KB Output is correct
21 Correct 236 ms 22136 KB Output is correct
22 Correct 263 ms 22136 KB Output is correct
23 Correct 247 ms 22136 KB Output is correct
24 Correct 234 ms 22392 KB Output is correct
25 Correct 101 ms 12280 KB Output is correct
26 Correct 119 ms 12152 KB Output is correct
27 Correct 245 ms 22136 KB Output is correct
28 Correct 238 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 11 ms 1280 KB Output is correct
37 Correct 246 ms 22136 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 12 ms 1280 KB Output is correct
41 Correct 235 ms 22136 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 0 ms 384 KB Output is correct
44 Correct 5 ms 768 KB Output is correct
45 Correct 110 ms 12152 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 59 ms 5896 KB Output is correct
50 Correct 236 ms 22136 KB Output is correct
51 Correct 237 ms 22136 KB Output is correct
52 Correct 244 ms 22136 KB Output is correct
53 Correct 102 ms 12272 KB Output is correct
54 Correct 99 ms 12152 KB Output is correct
55 Correct 237 ms 22136 KB Output is correct
56 Correct 250 ms 22136 KB Output is correct
57 Correct 101 ms 12152 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 0 ms 384 KB Output is correct
61 Correct 62 ms 5880 KB Output is correct
62 Correct 238 ms 22256 KB Output is correct
63 Correct 233 ms 22136 KB Output is correct
64 Correct 247 ms 22264 KB Output is correct
65 Correct 0 ms 384 KB Output is correct
66 Correct 59 ms 5880 KB Output is correct
67 Correct 241 ms 22168 KB Output is correct
68 Correct 240 ms 22136 KB Output is correct
69 Correct 251 ms 22136 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 0 ms 384 KB Output is correct
72 Incorrect 0 ms 384 KB Too many ways to get from 0 to 4, should be 1 found no less than 2
73 Halted 0 ms 0 KB -