oj.uz

Submission #1042035

# Submission time Handle Problem Language Result Execution time Memory
1042035 2024-08-02T12:54:02 Z amine_aroua Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 118 ms 28040 KB 
#include "supertrees.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
vector<vector<int>> pp;
vector<vector<int>> adj;
int nn;
struct DSU
{
	vector<int> e;
	DSU(int _n)
	{
		e.assign(_n , -1);
	}	
	
	int get(int u )
	{
		return (e[u] < 0 ? u : e[u] = get(e[u]));
	}
	bool same(int u , int v)
	{
		return get(u) == get(v);
	}
	void unite(int u , int v)
	{
		u = get(u) , v = get(v);
		if(u == v)
			return;
		if(e[u] > e[v])
			swap(u , v);
		e[u]+=e[v];
		e[v] = u;
	}
};
bool check_conn()
{
	DSU dsu(nn);
	for(int i = 0 ; i < nn ;i++)
	{
		for(int j = 0 ; j < nn ; j++)
		{
			if(pp[i][j])
			{
				dsu.unite(i , j);
			}
		}
	}
	for(int i = 0 ; i < nn ; i++)
	{
		for(int j = 0 ; j <  nn; j++)
		{
			if(pp[i][j] == 0 && dsu.same(i , j))
			{
				return 0;
			}
		}
	}
	DSU maker(nn);
	for(int i = 0 ; i < nn ;i++)
	{
		for(int j = 0 ; j < nn ;j++)
		{
			if(pp[i][j] == 1)
			{
				maker.unite(i , j);
			}
		}
	}
	for(int i = 0 ; i < nn ; i++)
	{
		for(int j = 0 ; j < nn ; j++)
		{
			if(pp[i][j] >= 2 && maker.same(i , j))
			{
				return 0;
			}
		}
	}
	vector<vector<int>> comp(nn);
	for(int i = 0 ; i < nn ; i++)
	{
		comp[dsu.get(i)].push_back(i);
	}
	for(auto c : comp)
	{
		vector<int> v;
		map<int , vector<int>> trees;
		for(auto i : c)
		{
			int par = maker.get(i);
			trees[par].push_back(i);
			if(i == par)
			{
				v.push_back(i);
				continue;
			}
			adj[par][i] = 1;
			adj[i][par] = 1;
		}
		if((int)v.size() == 1)
			continue;
		if((int)v.size() == 2)
		{
			return 0;
		}
		for(int i = 0 ; i < (int)v.size() ; i++)
		{
			adj[v[i]][v[(i + 1)%((int)v.size())]] = 1;
			adj[v[(i + 1)%((int)v.size())]][v[i]] = 1;
		}
	}
	build(adj);
	return 1;
}
int construct(std::vector<std::vector<int>> P) {
	
	pp = P;
	nn = (int)pp.size();
	adj.assign(nn , vector<int>(nn));
	return check_conn();
}

Subtask #1
11.0 / 11.0

# 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 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1420 KB Output is correct
7 Correct 100 ms 27900 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1420 KB Output is correct
7 Correct 100 ms 27900 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 432 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 118 ms 28040 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 936 KB Output is correct
17 Correct 53 ms 18056 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 27 ms 7256 KB Output is correct
21 Correct 106 ms 27912 KB Output is correct
22 Correct 108 ms 27984 KB Output is correct
23 Correct 109 ms 27984 KB Output is correct
24 Correct 101 ms 27916 KB Output is correct
25 Correct 48 ms 18000 KB Output is correct
26 Correct 43 ms 18184 KB Output is correct
27 Correct 105 ms 27988 KB Output is correct
28 Correct 107 ms 27984 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 432 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 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 5 ms 1396 KB Output is correct
9 Correct 104 ms 27280 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 101 ms 27408 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 1116 KB Output is correct
17 Correct 57 ms 17272 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 436 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 26 ms 7252 KB Output is correct
22 Correct 106 ms 27396 KB Output is correct
23 Correct 99 ms 27220 KB Output is correct
24 Correct 110 ms 27216 KB Output is correct
25 Correct 51 ms 17488 KB Output is correct
26 Correct 46 ms 17336 KB Output is correct
27 Correct 100 ms 27212 KB Output is correct
28 Correct 110 ms 27220 KB Output is correct
29 Correct 49 ms 17492 KB Output is correct

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 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 25 ms 7372 KB Output is correct
5 Correct 103 ms 27908 KB Output is correct
6 Correct 98 ms 28032 KB Output is correct
7 Correct 105 ms 27984 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 25 ms 7368 KB Output is correct
10 Correct 99 ms 28040 KB Output is correct
11 Correct 103 ms 27984 KB Output is correct
12 Correct 114 ms 27912 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 31 ms 7292 KB Output is correct
17 Correct 111 ms 27988 KB Output is correct
18 Correct 109 ms 27984 KB Output is correct
19 Correct 100 ms 27988 KB Output is correct
20 Correct 99 ms 27912 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1420 KB Output is correct
7 Correct 100 ms 27900 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 432 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 118 ms 28040 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 936 KB Output is correct
17 Correct 53 ms 18056 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 27 ms 7256 KB Output is correct
21 Correct 106 ms 27912 KB Output is correct
22 Correct 108 ms 27984 KB Output is correct
23 Correct 109 ms 27984 KB Output is correct
24 Correct 101 ms 27916 KB Output is correct
25 Correct 48 ms 18000 KB Output is correct
26 Correct 43 ms 18184 KB Output is correct
27 Correct 105 ms 27988 KB Output is correct
28 Correct 107 ms 27984 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 432 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 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 5 ms 1396 KB Output is correct
37 Correct 104 ms 27280 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 101 ms 27408 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 1116 KB Output is correct
45 Correct 57 ms 17272 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 436 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 26 ms 7252 KB Output is correct
50 Correct 106 ms 27396 KB Output is correct
51 Correct 99 ms 27220 KB Output is correct
52 Correct 110 ms 27216 KB Output is correct
53 Correct 51 ms 17488 KB Output is correct
54 Correct 46 ms 17336 KB Output is correct
55 Correct 100 ms 27212 KB Output is correct
56 Correct 110 ms 27220 KB Output is correct
57 Correct 49 ms 17492 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 2 ms 1116 KB Output is correct
61 Correct 56 ms 17928 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 26 ms 7212 KB Output is correct
66 Correct 46 ms 18040 KB Output is correct
67 Correct 52 ms 17960 KB Output is correct
68 Correct 45 ms 18004 KB Output is correct
69 Correct 48 ms 18000 KB Output is correct

Subtask #6
0 / 4.0

# 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 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1420 KB Output is correct
7 Correct 100 ms 27900 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 432 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 1372 KB Output is correct
13 Correct 118 ms 28040 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 936 KB Output is correct
17 Correct 53 ms 18056 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 27 ms 7256 KB Output is correct
21 Correct 106 ms 27912 KB Output is correct
22 Correct 108 ms 27984 KB Output is correct
23 Correct 109 ms 27984 KB Output is correct
24 Correct 101 ms 27916 KB Output is correct
25 Correct 48 ms 18000 KB Output is correct
26 Correct 43 ms 18184 KB Output is correct
27 Correct 105 ms 27988 KB Output is correct
28 Correct 107 ms 27984 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 432 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 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 5 ms 1396 KB Output is correct
37 Correct 104 ms 27280 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 101 ms 27408 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 1116 KB Output is correct
45 Correct 57 ms 17272 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 436 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 26 ms 7252 KB Output is correct
50 Correct 106 ms 27396 KB Output is correct
51 Correct 99 ms 27220 KB Output is correct
52 Correct 110 ms 27216 KB Output is correct
53 Correct 51 ms 17488 KB Output is correct
54 Correct 46 ms 17336 KB Output is correct
55 Correct 100 ms 27212 KB Output is correct
56 Correct 110 ms 27220 KB Output is correct
57 Correct 49 ms 17492 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 25 ms 7372 KB Output is correct
62 Correct 103 ms 27908 KB Output is correct
63 Correct 98 ms 28032 KB Output is correct
64 Correct 105 ms 27984 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 25 ms 7368 KB Output is correct
67 Correct 99 ms 28040 KB Output is correct
68 Correct 103 ms 27984 KB Output is correct
69 Correct 114 ms 27912 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 31 ms 7292 KB Output is correct
74 Correct 111 ms 27988 KB Output is correct
75 Correct 109 ms 27984 KB Output is correct
76 Correct 100 ms 27988 KB Output is correct
77 Correct 99 ms 27912 KB Output is correct
78 Correct 1 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 2 ms 1116 KB Output is correct
81 Correct 56 ms 17928 KB Output is correct
82 Correct 1 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 26 ms 7212 KB Output is correct
86 Correct 46 ms 18040 KB Output is correct
87 Correct 52 ms 17960 KB Output is correct
88 Correct 45 ms 18004 KB Output is correct
89 Correct 48 ms 18000 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 1116 KB Output is correct
93 Correct 52 ms 18008 KB Output is correct
94 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
95 Halted 0 ms 0 KB -