oj.uz

Submission #777810

# Submission time Handle Problem Language Result Execution time Memory
777810 2023-07-09T16:37:29 Z Minindu206 Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 198 ms 24248 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
struct DSU
{
	/* data */
	int n;
	vector<int> par, sz;
	void init(int _n)
	{
		n = _n;
		par.resize(n + 1, -1);
		sz.resize(n + 1, 0);
	}
	int finds(int a)
	{
		if (par[a] == -1)
			return a;
		return par[a] = finds(par[a]);
	}
	void unites(int a, int b)
	{
		int x = finds(a);
		int y = finds(b);
		if (x != y)
		{
			if (sz[x] < sz[y])
				swap(x, y);
			par[y] = x;
			sz[x] += sz[y];
		}
	}
};
int construct(std::vector<std::vector<int>> p)
{
	int n = p.size();
	DSU d;
	d.init(n);
	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;
			if (p[i][j])
			{
				d.unites(i, j);
			}
		}
	}
	map<int, vector<int>> mp;
	for (int i = 0; i < n; i++)
	{
		mp[d.finds(i)].push_back(i);
		for (int j = 0; j < n; j++)
		{
			if (i == j)
				continue;
			if (p[i][j] == 0)
				if (d.finds(i) == d.finds(j))
					return 0;
		}
	}
	vector<vector<int>> ans(n, vector<int>(n, 0));
	for (auto a : mp)
	{
		if (a.second.size() == 1)
			continue;
		int csz = a.second.size();
		vector<int> vis(n, 0), cyc;
		for(auto b:a.second)
		{
			if(vis[b])
				continue;
			cyc.push_back(b);
			vis[b] = 1;
			for(auto c:a.second)
			{
				if(vis[c] == 1)
					continue;
				if(p[b][c] == 1)
				{
					vis[c] = 1;
					ans[b][c] = 1;
					ans[c][b] = 1;
				}
			}
		}
		if(cyc.size() == 2)
			return 0;
		int st = -1;
		for(auto b:cyc)
		{
			if(st == -1)
				st = b;
			else
			{
				ans[st][b] = 1;
				ans[b][st] = 1;
				st = b;
			}
		}
		if(cyc.size() > 2)
		{
			ans[st][cyc[0]] = 1;
			ans[cyc[0]][st] = 1;
		}
	}
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:72:7: warning: unused variable 'csz' [-Wunused-variable]
   72 |   int csz = a.second.size();
      |       ^~~

Subtask #1
11.0 / 11.0

# 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 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 159 ms 22032 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 159 ms 22032 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 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 158 ms 22152 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 73 ms 8080 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 40 ms 5668 KB Output is correct
21 Correct 194 ms 23956 KB Output is correct
22 Correct 164 ms 23980 KB Output is correct
23 Correct 163 ms 23932 KB Output is correct
24 Correct 157 ms 24064 KB Output is correct
25 Correct 69 ms 10112 KB Output is correct
26 Correct 65 ms 10112 KB Output is correct
27 Correct 162 ms 23924 KB Output is correct
28 Correct 162 ms 24184 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 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 1236 KB Output is correct
9 Correct 160 ms 24080 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1208 KB Output is correct
13 Correct 159 ms 23920 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 632 KB Output is correct
17 Correct 74 ms 10020 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 40 ms 6208 KB Output is correct
22 Correct 178 ms 23960 KB Output is correct
23 Correct 163 ms 24248 KB Output is correct
24 Correct 162 ms 23920 KB Output is correct
25 Correct 67 ms 14208 KB Output is correct
26 Correct 66 ms 10100 KB Output is correct
27 Correct 159 ms 23996 KB Output is correct
28 Correct 198 ms 24000 KB Output is correct
29 Correct 70 ms 14192 KB Output is correct

Subtask #4
35.0 / 35.0

# 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 296 KB Output is correct
4 Correct 40 ms 6168 KB Output is correct
5 Correct 176 ms 23980 KB Output is correct
6 Correct 165 ms 24048 KB Output is correct
7 Correct 170 ms 23924 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 49 ms 6220 KB Output is correct
10 Correct 176 ms 24020 KB Output is correct
11 Correct 192 ms 23956 KB Output is correct
12 Correct 174 ms 23904 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 49 ms 6256 KB Output is correct
17 Correct 164 ms 23908 KB Output is correct
18 Correct 161 ms 23976 KB Output is correct
19 Correct 177 ms 23912 KB Output is correct
20 Correct 185 ms 24088 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 159 ms 22032 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 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 158 ms 22152 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 73 ms 8080 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 40 ms 5668 KB Output is correct
21 Correct 194 ms 23956 KB Output is correct
22 Correct 164 ms 23980 KB Output is correct
23 Correct 163 ms 23932 KB Output is correct
24 Correct 157 ms 24064 KB Output is correct
25 Correct 69 ms 10112 KB Output is correct
26 Correct 65 ms 10112 KB Output is correct
27 Correct 162 ms 23924 KB Output is correct
28 Correct 162 ms 24184 KB Output is correct
29 Correct 1 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 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 1236 KB Output is correct
37 Correct 160 ms 24080 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1208 KB Output is correct
41 Correct 159 ms 23920 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 632 KB Output is correct
45 Correct 74 ms 10020 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 300 KB Output is correct
49 Correct 40 ms 6208 KB Output is correct
50 Correct 178 ms 23960 KB Output is correct
51 Correct 163 ms 24248 KB Output is correct
52 Correct 162 ms 23920 KB Output is correct
53 Correct 67 ms 14208 KB Output is correct
54 Correct 66 ms 10100 KB Output is correct
55 Correct 159 ms 23996 KB Output is correct
56 Correct 198 ms 24000 KB Output is correct
57 Correct 70 ms 14192 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 4 ms 596 KB Output is correct
61 Correct 72 ms 10100 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 300 KB Output is correct
65 Correct 41 ms 6260 KB Output is correct
66 Correct 85 ms 10104 KB Output is correct
67 Correct 72 ms 10104 KB Output is correct
68 Correct 65 ms 10100 KB Output is correct
69 Correct 69 ms 14196 KB Output is correct

Subtask #6
4.0 / 4.0

# 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 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 159 ms 22032 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 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 158 ms 22152 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 73 ms 8080 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 40 ms 5668 KB Output is correct
21 Correct 194 ms 23956 KB Output is correct
22 Correct 164 ms 23980 KB Output is correct
23 Correct 163 ms 23932 KB Output is correct
24 Correct 157 ms 24064 KB Output is correct
25 Correct 69 ms 10112 KB Output is correct
26 Correct 65 ms 10112 KB Output is correct
27 Correct 162 ms 23924 KB Output is correct
28 Correct 162 ms 24184 KB Output is correct
29 Correct 1 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 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 1236 KB Output is correct
37 Correct 160 ms 24080 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1208 KB Output is correct
41 Correct 159 ms 23920 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 4 ms 632 KB Output is correct
45 Correct 74 ms 10020 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 300 KB Output is correct
49 Correct 40 ms 6208 KB Output is correct
50 Correct 178 ms 23960 KB Output is correct
51 Correct 163 ms 24248 KB Output is correct
52 Correct 162 ms 23920 KB Output is correct
53 Correct 67 ms 14208 KB Output is correct
54 Correct 66 ms 10100 KB Output is correct
55 Correct 159 ms 23996 KB Output is correct
56 Correct 198 ms 24000 KB Output is correct
57 Correct 70 ms 14192 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 296 KB Output is correct
61 Correct 40 ms 6168 KB Output is correct
62 Correct 176 ms 23980 KB Output is correct
63 Correct 165 ms 24048 KB Output is correct
64 Correct 170 ms 23924 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 49 ms 6220 KB Output is correct
67 Correct 176 ms 24020 KB Output is correct
68 Correct 192 ms 23956 KB Output is correct
69 Correct 174 ms 23904 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 49 ms 6256 KB Output is correct
74 Correct 164 ms 23908 KB Output is correct
75 Correct 161 ms 23976 KB Output is correct
76 Correct 177 ms 23912 KB Output is correct
77 Correct 185 ms 24088 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 4 ms 596 KB Output is correct
81 Correct 72 ms 10100 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 300 KB Output is correct
85 Correct 41 ms 6260 KB Output is correct
86 Correct 85 ms 10104 KB Output is correct
87 Correct 72 ms 10104 KB Output is correct
88 Correct 65 ms 10100 KB Output is correct
89 Correct 69 ms 14196 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 3 ms 596 KB Output is correct
93 Correct 72 ms 10100 KB Output is correct
94 Correct 1 ms 340 KB Output is correct
95 Correct 1 ms 296 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 16 ms 2772 KB Output is correct
98 Correct 61 ms 10108 KB Output is correct
99 Correct 70 ms 10020 KB Output is correct
100 Correct 63 ms 10104 KB Output is correct
101 Correct 65 ms 10104 KB Output is correct
102 Correct 64 ms 10112 KB Output is correct
103 Correct 62 ms 10024 KB Output is correct
104 Correct 69 ms 10096 KB Output is correct
105 Correct 69 ms 10100 KB Output is correct