Submission #788236

# Submission time Handle Problem Language Result Execution time Memory
788236 2023-07-20T03:01:19 Z mindiyak Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
247 ms 22412 KB
#include "supertrees.h"
#include <vector>
#include <set>
#include <iostream>

using namespace std;

vector<int> parent(1003);

int find_head(int n){
	if(parent[n] == n){
		return n;
	}return find_head(parent[n]);
}

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	set<int> heads;
	vector<vector<int>>ans(n,vector<int>(n,0));

	for (int i = 0; i < n; i++) {
		parent[i] = i;
	}

	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(i==j)
				continue;
			if(p[i][j] == 3){
				return 0;
			}else if(p[i][j] == 1){
				int lower = min(i,j);
				int higher = max(i,j);
				if(find_head(lower) != find_head(higher)){
					ans[i][j] = 1;
					ans[j][i] = 1;
					parent[higher] = find_head(lower);
				}
			}else if(p[i][j] == 2){
				heads.insert(find_head(i));
				heads.insert(find_head(j));
			}
		}
	}

	// cout << "table travers" << endl;

	vector<int> header;
	for (int i : heads) {
		header.push_back(i);
	}


	int t = header.size();

	// cout << t << " " << (0<(t-1)) << endl;

	for (int i = 0; i < (t-1); i++) {
		// cout << "for" << endl;
		ans[header[i]][header[i+1]] = 1;
		ans[header[i+1]][header[i]] = 1;
	}
	if(t > 2){
		// cout << "comare" << endl;
		ans[header[0]][header[t-1]] = 1;
		ans[header[t-1]][header[0]] = 1;
	}

	// cout << "headers connected" << endl;

	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			int i_head = find_head(i);
			int j_head = find_head(j);
			if(i==j)
				continue;
			if(p[i][j] == 0){
				if(i_head == j_head){
					return 0;
				}
				if(heads.count(i_head) == 1 and heads.count(j_head) == 1){
					return 0;
				}
			}else if(p[i][j] == 1){
				if(i_head != j_head){
					return 0;
				}
			}else if(p[i][j] == 2){
				if(t < 3){
					return 0;
				}
				if(i_head == j_head){
					return 0;
				}
				if(heads.count(i_head) == 0 or heads.count(j_head) == 0){
					return 0;
				}
			}
		}
	}


	build(ans);
	return 1;
}
# 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 0 ms 212 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 7 ms 1212 KB Output is correct
7 Correct 184 ms 22372 KB Output is correct
# 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 0 ms 212 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 7 ms 1212 KB Output is correct
7 Correct 184 ms 22372 KB Output is correct
8 Correct 1 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 1 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 151 ms 22332 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 304 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 76 ms 12304 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 39 ms 5936 KB Output is correct
21 Correct 154 ms 22196 KB Output is correct
22 Correct 189 ms 22232 KB Output is correct
23 Correct 159 ms 22188 KB Output is correct
24 Correct 186 ms 22280 KB Output is correct
25 Correct 68 ms 12332 KB Output is correct
26 Correct 59 ms 12336 KB Output is correct
27 Correct 157 ms 22304 KB Output is correct
28 Correct 160 ms 22212 KB Output is correct
# 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 0 ms 304 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1240 KB Output is correct
9 Correct 151 ms 22160 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 10 ms 1236 KB Output is correct
13 Correct 247 ms 22116 KB Output is correct
14 Correct 1 ms 304 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 800 KB Output is correct
17 Correct 103 ms 12440 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Incorrect 16 ms 3360 KB Answer gives possible 0 while actual possible 1
22 Halted 0 ms 0 KB -
# 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 300 KB Output is correct
4 Correct 40 ms 5908 KB Output is correct
5 Correct 158 ms 22412 KB Output is correct
6 Correct 154 ms 22292 KB Output is correct
7 Correct 159 ms 22276 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 17 ms 3428 KB Answer gives possible 0 while actual possible 1
10 Halted 0 ms 0 KB -
# 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 0 ms 212 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 7 ms 1212 KB Output is correct
7 Correct 184 ms 22372 KB Output is correct
8 Correct 1 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 1 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 151 ms 22332 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 304 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 76 ms 12304 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 39 ms 5936 KB Output is correct
21 Correct 154 ms 22196 KB Output is correct
22 Correct 189 ms 22232 KB Output is correct
23 Correct 159 ms 22188 KB Output is correct
24 Correct 186 ms 22280 KB Output is correct
25 Correct 68 ms 12332 KB Output is correct
26 Correct 59 ms 12336 KB Output is correct
27 Correct 157 ms 22304 KB Output is correct
28 Correct 160 ms 22212 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 0 ms 304 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1240 KB Output is correct
37 Correct 151 ms 22160 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 10 ms 1236 KB Output is correct
41 Correct 247 ms 22116 KB Output is correct
42 Correct 1 ms 304 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 800 KB Output is correct
45 Correct 103 ms 12440 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Incorrect 16 ms 3360 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -
# 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 0 ms 212 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 7 ms 1212 KB Output is correct
7 Correct 184 ms 22372 KB Output is correct
8 Correct 1 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 1 ms 212 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 151 ms 22332 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 304 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 76 ms 12304 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 39 ms 5936 KB Output is correct
21 Correct 154 ms 22196 KB Output is correct
22 Correct 189 ms 22232 KB Output is correct
23 Correct 159 ms 22188 KB Output is correct
24 Correct 186 ms 22280 KB Output is correct
25 Correct 68 ms 12332 KB Output is correct
26 Correct 59 ms 12336 KB Output is correct
27 Correct 157 ms 22304 KB Output is correct
28 Correct 160 ms 22212 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 0 ms 304 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1240 KB Output is correct
37 Correct 151 ms 22160 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 10 ms 1236 KB Output is correct
41 Correct 247 ms 22116 KB Output is correct
42 Correct 1 ms 304 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 800 KB Output is correct
45 Correct 103 ms 12440 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Incorrect 16 ms 3360 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -