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Submission #930674

# Submission time Handle Problem Language Result Execution time Memory
930674 2024-02-20T09:16:38 Z Cutebol Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 168 ms 24232 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

const int N = 1003 ;
const int inf = 1e9 ;

int pr[N] , sz[N] , vis[N] ;
vector <int> vec[N] ;

int find ( int a ){
	if ( a == pr[a] ) return a ;
	return pr[a] = find(pr[a]) ;
}

void merge ( int a , int b ){
	a = find(a) ;
	b = find(b) ;
	if ( a != b ){
		if ( sz[a] > sz[b] ) swap(a,b) ;
		sz[b] += sz[a] ;
		pr[a] = b ;
	}
}

int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> answer;
	for (int i = 0; i < n; i++) {
		vector<int> row;
		row.resize(n);
		answer.push_back(row);
	}
	for ( int i = 0 ; i < n ; i ++ ) pr[i] = i , sz[i] = 1 ;
	for ( int i = 0 ; i < n ; i ++ ){
		for ( int j = 0 ; j < n ; j ++ ){
			if ( p[i][j] && i != j ){
				if ( p[i][j] == 3 ) return 0 ;
				merge(i,j) ;
			}
		}
	}
	for ( int i = 0 ; i < n ; i ++ ){
		for ( int j = 0 ; j < n ; j ++ ){
			if ( p[i][j] == 0 && find(i) == find(j) ) return 0 ;
		}
	}
	for ( int i = 0 ; i < n ; i ++ ) vec[find(i)].push_back(i) ;
	for ( int i = 0 ; i < n ; i ++ ) pr[i] = i , sz[i] = 1 ;
	for ( vector <int> v : vec ){
		for ( auto i : v ){
			for ( auto j : v ){
				if ( p[i][j] == 1 ) merge(i,j) ;
			}
		}
		for ( auto i : v ){
			for ( auto j : v ){
				if ( p[i][j] == 2 && find(i) == find(j) ) return 0 ;
			}
		}
		vector <int> b ;
		for ( auto i : v ){
			if ( find(i) != i ){
				answer[i][find(i)] = 1 ;
				answer[find(i)][i] = 1 ;
			}
			if ( !vis[find(i)] ){
				vis[find(i)] = 1 ;
				b.push_back(find(i)) ;
			}
		}
		if ( b.size() == 2 && p[b[0]][b[1]] == 2 ) return 0 ;
		for ( int i = 1 ; i < b.size() ; i ++ ){
			answer[b[i]][b[i-1]] = 1 ;
			answer[b[i-1]][b[i]] = 1 ;
		}
		if ( b.size() > 1 ){
			answer[b[0]][b[b.size()-1]] = 1 ;
			answer[b[b.size()-1]][b[0]] = 1 ;
		}
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:73:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |   for ( int i = 1 ; i < b.size() ; i ++ ){
      |                     ~~^~~~~~~~~~

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 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 1368 KB Output is correct
7 Correct 158 ms 23956 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 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 1368 KB Output is correct
7 Correct 158 ms 23956 KB Output is correct
8 Correct 0 ms 344 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 7 ms 1372 KB Output is correct
13 Correct 161 ms 24200 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 70 ms 14124 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 6348 KB Output is correct
21 Correct 155 ms 24148 KB Output is correct
22 Correct 151 ms 23952 KB Output is correct
23 Correct 160 ms 24144 KB Output is correct
24 Correct 153 ms 23960 KB Output is correct
25 Correct 62 ms 14028 KB Output is correct
26 Correct 60 ms 14104 KB Output is correct
27 Correct 161 ms 24148 KB Output is correct
28 Correct 150 ms 23972 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 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 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 7 ms 1216 KB Output is correct
9 Correct 150 ms 24084 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1216 KB Output is correct
13 Correct 160 ms 23996 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 988 KB Output is correct
17 Correct 71 ms 14120 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 39 ms 6324 KB Output is correct
22 Correct 156 ms 24144 KB Output is correct
23 Correct 151 ms 24060 KB Output is correct
24 Correct 160 ms 24100 KB Output is correct
25 Correct 62 ms 14164 KB Output is correct
26 Correct 62 ms 14164 KB Output is correct
27 Correct 152 ms 24144 KB Output is correct
28 Correct 168 ms 24140 KB Output is correct
29 Correct 61 ms 14164 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 38 ms 6216 KB Output is correct
5 Correct 154 ms 24144 KB Output is correct
6 Correct 151 ms 23980 KB Output is correct
7 Correct 158 ms 24232 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 38 ms 6328 KB Output is correct
10 Correct 154 ms 24144 KB Output is correct
11 Correct 152 ms 24148 KB Output is correct
12 Correct 159 ms 24132 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 38 ms 6392 KB Output is correct
17 Correct 154 ms 24100 KB Output is correct
18 Correct 166 ms 24028 KB Output is correct
19 Correct 152 ms 24148 KB Output is correct
20 Correct 151 ms 24144 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 7 ms 1368 KB Output is correct
7 Correct 158 ms 23956 KB Output is correct
8 Correct 0 ms 344 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 7 ms 1372 KB Output is correct
13 Correct 161 ms 24200 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 70 ms 14124 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 6348 KB Output is correct
21 Correct 155 ms 24148 KB Output is correct
22 Correct 151 ms 23952 KB Output is correct
23 Correct 160 ms 24144 KB Output is correct
24 Correct 153 ms 23960 KB Output is correct
25 Correct 62 ms 14028 KB Output is correct
26 Correct 60 ms 14104 KB Output is correct
27 Correct 161 ms 24148 KB Output is correct
28 Correct 150 ms 23972 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 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 7 ms 1216 KB Output is correct
37 Correct 150 ms 24084 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1216 KB Output is correct
41 Correct 160 ms 23996 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 988 KB Output is correct
45 Correct 71 ms 14120 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 39 ms 6324 KB Output is correct
50 Correct 156 ms 24144 KB Output is correct
51 Correct 151 ms 24060 KB Output is correct
52 Correct 160 ms 24100 KB Output is correct
53 Correct 62 ms 14164 KB Output is correct
54 Correct 62 ms 14164 KB Output is correct
55 Correct 152 ms 24144 KB Output is correct
56 Correct 168 ms 24140 KB Output is correct
57 Correct 61 ms 14164 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 3 ms 992 KB Output is correct
61 Correct 69 ms 14024 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 348 KB Output is correct
65 Correct 38 ms 6228 KB Output is correct
66 Correct 62 ms 14096 KB Output is correct
67 Correct 62 ms 14268 KB Output is correct
68 Correct 62 ms 14160 KB Output is correct
69 Correct 63 ms 14116 KB Output is correct

Subtask #6
4.0 / 4.0

# 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 7 ms 1368 KB Output is correct
7 Correct 158 ms 23956 KB Output is correct
8 Correct 0 ms 344 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 7 ms 1372 KB Output is correct
13 Correct 161 ms 24200 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 70 ms 14124 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 6348 KB Output is correct
21 Correct 155 ms 24148 KB Output is correct
22 Correct 151 ms 23952 KB Output is correct
23 Correct 160 ms 24144 KB Output is correct
24 Correct 153 ms 23960 KB Output is correct
25 Correct 62 ms 14028 KB Output is correct
26 Correct 60 ms 14104 KB Output is correct
27 Correct 161 ms 24148 KB Output is correct
28 Correct 150 ms 23972 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 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 7 ms 1216 KB Output is correct
37 Correct 150 ms 24084 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 7 ms 1216 KB Output is correct
41 Correct 160 ms 23996 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 988 KB Output is correct
45 Correct 71 ms 14120 KB Output is correct
46 Correct 1 ms 348 KB Output is correct
47 Correct 0 ms 344 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 39 ms 6324 KB Output is correct
50 Correct 156 ms 24144 KB Output is correct
51 Correct 151 ms 24060 KB Output is correct
52 Correct 160 ms 24100 KB Output is correct
53 Correct 62 ms 14164 KB Output is correct
54 Correct 62 ms 14164 KB Output is correct
55 Correct 152 ms 24144 KB Output is correct
56 Correct 168 ms 24140 KB Output is correct
57 Correct 61 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 0 ms 348 KB Output is correct
61 Correct 38 ms 6216 KB Output is correct
62 Correct 154 ms 24144 KB Output is correct
63 Correct 151 ms 23980 KB Output is correct
64 Correct 158 ms 24232 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 38 ms 6328 KB Output is correct
67 Correct 154 ms 24144 KB Output is correct
68 Correct 152 ms 24148 KB Output is correct
69 Correct 159 ms 24132 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 1 ms 468 KB Output is correct
73 Correct 38 ms 6392 KB Output is correct
74 Correct 154 ms 24100 KB Output is correct
75 Correct 166 ms 24028 KB Output is correct
76 Correct 152 ms 24148 KB Output is correct
77 Correct 151 ms 24144 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 1 ms 348 KB Output is correct
80 Correct 3 ms 992 KB Output is correct
81 Correct 69 ms 14024 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 348 KB Output is correct
85 Correct 38 ms 6228 KB Output is correct
86 Correct 62 ms 14096 KB Output is correct
87 Correct 62 ms 14268 KB Output is correct
88 Correct 62 ms 14160 KB Output is correct
89 Correct 63 ms 14116 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 860 KB Output is correct
93 Correct 62 ms 14164 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 460 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Correct 15 ms 3932 KB Output is correct
98 Correct 60 ms 14164 KB Output is correct
99 Correct 61 ms 14160 KB Output is correct
100 Correct 63 ms 14148 KB Output is correct
101 Correct 75 ms 14160 KB Output is correct
102 Correct 60 ms 14228 KB Output is correct
103 Correct 60 ms 14064 KB Output is correct
104 Correct 61 ms 14164 KB Output is correct
105 Correct 66 ms 14164 KB Output is correct