oj.uz

Submission #788238

# Submission time Handle Problem Language Result Execution time Memory
788238 2023-07-20T03:12:22 Z mindiyak Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 189 ms 22064 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);
				}
			}
		}
	}

	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(i==j)
				continue;
			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;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1200 KB Output is correct
7 Correct 157 ms 21936 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1200 KB Output is correct
7 Correct 157 ms 21936 KB Output is correct
8 Correct 0 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 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 154 ms 21948 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 73 ms 12040 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 41 ms 5768 KB Output is correct
21 Correct 187 ms 22024 KB Output is correct
22 Correct 155 ms 22036 KB Output is correct
23 Correct 164 ms 22016 KB Output is correct
24 Correct 155 ms 21936 KB Output is correct
25 Correct 70 ms 12048 KB Output is correct
26 Correct 63 ms 12040 KB Output is correct
27 Correct 166 ms 22036 KB Output is correct
28 Correct 152 ms 21964 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1172 KB Output is correct
9 Correct 154 ms 21932 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 189 ms 22064 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 100 ms 12164 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Incorrect 17 ms 3220 KB Answer gives possible 0 while actual possible 1
22 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 42 ms 5656 KB Output is correct
5 Correct 156 ms 22040 KB Output is correct
6 Correct 156 ms 21964 KB Output is correct
7 Correct 165 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Incorrect 18 ms 3212 KB Answer gives possible 0 while actual possible 1
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1200 KB Output is correct
7 Correct 157 ms 21936 KB Output is correct
8 Correct 0 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 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 154 ms 21948 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 73 ms 12040 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 41 ms 5768 KB Output is correct
21 Correct 187 ms 22024 KB Output is correct
22 Correct 155 ms 22036 KB Output is correct
23 Correct 164 ms 22016 KB Output is correct
24 Correct 155 ms 21936 KB Output is correct
25 Correct 70 ms 12048 KB Output is correct
26 Correct 63 ms 12040 KB Output is correct
27 Correct 166 ms 22036 KB Output is correct
28 Correct 152 ms 21964 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1172 KB Output is correct
37 Correct 154 ms 21932 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1108 KB Output is correct
41 Correct 189 ms 22064 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 5 ms 724 KB Output is correct
45 Correct 100 ms 12164 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Incorrect 17 ms 3220 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1200 KB Output is correct
7 Correct 157 ms 21936 KB Output is correct
8 Correct 0 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 0 ms 212 KB Output is correct
12 Correct 7 ms 1108 KB Output is correct
13 Correct 154 ms 21948 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 73 ms 12040 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 41 ms 5768 KB Output is correct
21 Correct 187 ms 22024 KB Output is correct
22 Correct 155 ms 22036 KB Output is correct
23 Correct 164 ms 22016 KB Output is correct
24 Correct 155 ms 21936 KB Output is correct
25 Correct 70 ms 12048 KB Output is correct
26 Correct 63 ms 12040 KB Output is correct
27 Correct 166 ms 22036 KB Output is correct
28 Correct 152 ms 21964 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1172 KB Output is correct
37 Correct 154 ms 21932 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 8 ms 1108 KB Output is correct
41 Correct 189 ms 22064 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 5 ms 724 KB Output is correct
45 Correct 100 ms 12164 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Incorrect 17 ms 3220 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -