oj.uz

Submission #952781

# Submission time Handle Problem Language Result Execution time Memory
952781 2024-03-24T19:23:41 Z emad234 Connecting Supertrees (IOI20_supertrees) C++17
56 / 100
 466 ms 73044 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define pii pair<ll, ll>
const ll mod = 1e9 + 7;
const ll mxN = 1e6 + 5;
using namespace std;

int dsu[mxN];
int find(int x) { return dsu[x] == x ? x : dsu[x] = find(dsu[x]); }
void merge(int a, int b) { dsu[find(b)] = find(a); }
int construct(std::vector<std::vector<int>> p)
{
	vector<vector<int>> b;
	int n = p.size(), m = p.size();
	b.resize(n);
	for (int i = 0; i < n; i++)
		dsu[i] = i;
	for (int i = 0; i < n; i++)
		b[i].resize(m);
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < m; j++)
		{
			if (i == j)
				continue;
			if (p[i][j] == 1)
			{
				if (find(i) != find(j))
				{
					merge(i, j);
					b[i][j] = 1;
					b[j][i] = 1;
				}
			}
		}
	}
	vector<vector<int>> ty;
	vector<set<int>> v;
	v.resize(n);
	ty.resize(n);
	for (int i = 0; i < n; i++)
	{
		ty[i].resize(n);
		for (int j = 0; j < m; j++)
		{
			ty[i][j] = -1;
		}
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < m; j++)
		{
			if (i == j)
				continue;
			if (find(i) == find(j))
			{
				if (p[i][j] != 1)
					return 0;
			}
			else
			{
				if (ty[find(i)][find(j)] != -1 && p[i][j] != ty[find(i)][find(j)])
					return 0;
				if (p[i][j] == 2)
				{
					v[find(i)].insert(find(j));
					v[find(j)].insert(find(i));
				}
				ty[find(i)][find(j)] = p[i][j];
			}
		}
	}
	vector<bool> vis(n);
	for (int i = 0; i < n; i++)
	{
		int prv = -1;
		if (vis[i])
			continue;
		if (v[i].size() == 1)
			return 0;
		v[i].insert(i);
		for (auto x : v[i])
		{
			for (int j = 0; j < n; j++)
			{
				if (x == j)
					continue;
				if (v[i].find(j) != v[i].end() && p[x][j] != 2)
					return 0;
			}
		}
		for (auto x : v[i])
		{
			vis[x] = 1;
			if (prv != -1)
			{
				b[x][prv] = 1;
				b[prv][x] = 1;
			}
			prv = x;
		}
		if (v[i].size() >= 2)
		{
			b[*v[i].begin()][*v[i].rbegin()] = 1;
			b[*v[i].rbegin()][*v[i].begin()] = 1;
		}
	}
	build(b);
	return 1;
}

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 1 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 1372 KB Output is correct
7 Correct 162 ms 26040 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 1 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 1372 KB Output is correct
7 Correct 162 ms 26040 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 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 1624 KB Output is correct
13 Correct 158 ms 26196 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 5 ms 856 KB Output is correct
17 Correct 80 ms 16212 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 42 ms 6776 KB Output is correct
21 Correct 174 ms 26160 KB Output is correct
22 Correct 178 ms 26196 KB Output is correct
23 Correct 167 ms 26192 KB Output is correct
24 Correct 159 ms 26128 KB Output is correct
25 Correct 69 ms 16208 KB Output is correct
26 Correct 76 ms 16160 KB Output is correct
27 Correct 167 ms 26132 KB Output is correct
28 Correct 158 ms 26136 KB Output is correct

Subtask #3
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 0 ms 348 KB Output is correct
5 Correct 1 ms 344 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 1524 KB Output is correct
9 Correct 157 ms 26124 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 15 ms 3196 KB Output is correct
13 Correct 466 ms 73044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 8 ms 1884 KB Output is correct
17 Correct 235 ms 39508 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 45 ms 7024 KB Output is correct
22 Correct 182 ms 30804 KB Output is correct
23 Correct 159 ms 26400 KB Output is correct
24 Correct 303 ms 49424 KB Output is correct
25 Correct 71 ms 16208 KB Output is correct
26 Incorrect 217 ms 30800 KB Answer gives possible 1 while actual possible 0
27 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# 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 41 ms 6872 KB Output is correct
5 Correct 187 ms 26064 KB Output is correct
6 Correct 162 ms 26028 KB Output is correct
7 Correct 167 ms 25992 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 41 ms 7260 KB Output is correct
10 Correct 180 ms 30804 KB Output is correct
11 Correct 161 ms 26528 KB Output is correct
12 Correct 288 ms 49508 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 41 ms 6996 KB Output is correct
17 Correct 182 ms 30800 KB Output is correct
18 Correct 197 ms 27988 KB Output is correct
19 Correct 168 ms 26912 KB Output is correct
20 Correct 161 ms 26196 KB Output is correct

Subtask #5
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 1 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 1372 KB Output is correct
7 Correct 162 ms 26040 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 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 1624 KB Output is correct
13 Correct 158 ms 26196 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 5 ms 856 KB Output is correct
17 Correct 80 ms 16212 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 42 ms 6776 KB Output is correct
21 Correct 174 ms 26160 KB Output is correct
22 Correct 178 ms 26196 KB Output is correct
23 Correct 167 ms 26192 KB Output is correct
24 Correct 159 ms 26128 KB Output is correct
25 Correct 69 ms 16208 KB Output is correct
26 Correct 76 ms 16160 KB Output is correct
27 Correct 167 ms 26132 KB Output is correct
28 Correct 158 ms 26136 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 0 ms 348 KB Output is correct
33 Correct 1 ms 344 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 1524 KB Output is correct
37 Correct 157 ms 26124 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 15 ms 3196 KB Output is correct
41 Correct 466 ms 73044 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 8 ms 1884 KB Output is correct
45 Correct 235 ms 39508 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 45 ms 7024 KB Output is correct
50 Correct 182 ms 30804 KB Output is correct
51 Correct 159 ms 26400 KB Output is correct
52 Correct 303 ms 49424 KB Output is correct
53 Correct 71 ms 16208 KB Output is correct
54 Incorrect 217 ms 30800 KB Answer gives possible 1 while actual possible 0
55 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 348 KB Output is correct
3 Correct 1 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 1372 KB Output is correct
7 Correct 162 ms 26040 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 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 1624 KB Output is correct
13 Correct 158 ms 26196 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 5 ms 856 KB Output is correct
17 Correct 80 ms 16212 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 42 ms 6776 KB Output is correct
21 Correct 174 ms 26160 KB Output is correct
22 Correct 178 ms 26196 KB Output is correct
23 Correct 167 ms 26192 KB Output is correct
24 Correct 159 ms 26128 KB Output is correct
25 Correct 69 ms 16208 KB Output is correct
26 Correct 76 ms 16160 KB Output is correct
27 Correct 167 ms 26132 KB Output is correct
28 Correct 158 ms 26136 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 0 ms 348 KB Output is correct
33 Correct 1 ms 344 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 1524 KB Output is correct
37 Correct 157 ms 26124 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 15 ms 3196 KB Output is correct
41 Correct 466 ms 73044 KB Output is correct
42 Correct 0 ms 344 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 8 ms 1884 KB Output is correct
45 Correct 235 ms 39508 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 45 ms 7024 KB Output is correct
50 Correct 182 ms 30804 KB Output is correct
51 Correct 159 ms 26400 KB Output is correct
52 Correct 303 ms 49424 KB Output is correct
53 Correct 71 ms 16208 KB Output is correct
54 Incorrect 217 ms 30800 KB Answer gives possible 1 while actual possible 0
55 Halted 0 ms 0 KB -