oj.uz

Submission #952791

# Submission time Handle Problem Language Result Execution time Memory
952791 2024-03-24T19:49:39 Z emad234 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 510 ms 75028 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, v1;
	v.resize(n);
	v1.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));
				}
				if (p[i][j] == 3)
				{
					v1[find(i)].insert(find(j));
					v1[find(j)].insert(find(i));
				}
				ty[find(i)][find(j)] = p[i][j];
			}
		}
	}
	vector<bool> vis(n);
	for (int i = 0; i < n; i++)
	{
		vector<bool> fnd(n);
		int prv = -1;
		if (vis[i])
			continue;
		if (v[i].size() == 1)
			return 0;
		v[i].insert(i);
		for (auto x : v[i])
		{
			fnd[x] = 1;
			for (auto y : v[x])
			{
				fnd[y] = 1;
			}
		}
		for (auto x : v[i])
		{
			for (int j = 0; j < n; j++)
			{
				if (x == j)
					continue;
				if (fnd[j] && p[x][j] != 2)
					return 0;
			}
			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;
		}
	}
	for (int i = 0; i < n; i++)
		vis[i] = 0;
	for (int i = 0; i < n; i++)
	{
		vector<bool> fnd(n);
		int prv = -1;
		if (vis[i])
			continue;
		v1[i].insert(i);
		if (v1[i].size() == 2 || v1[i].size() == 3)
			return 0;
		for (auto x : v1[i])
		{
			fnd[x] = 1;
			for (auto y : v1[x])
			{
				fnd[y] = 1;
			}
		}
		int bg;
		int ed = *v1[i].begin();
		bg = ed;
		ed++;
		ed++;
		for (auto x : v1[i])
		{
			for (int j = 0; j < n; j++)
			{
				if (x == j)
					continue;
				if (fnd[j] && p[x][j] != 3)
					return 0;
			}
			vis[x] = 1;
			if (prv != -1)
			{
				b[x][prv] = 1;
				b[prv][x] = 1;
			}
			prv = x;
		}
		if (v1[i].size() > 3)
		{
			b[*v1[i].begin()][*v1[i].rbegin()] = 1;
			b[*v1[i].rbegin()][*v1[i].begin()] = 1;
			b[bg][ed] = 1;
			b[ed][bg] = 1;
		}
	}
	build(b);
	return 1;
}

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 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 166 ms 28164 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 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 166 ms 28164 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 400 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 7 ms 1368 KB Output is correct
13 Correct 165 ms 28052 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 972 KB Output is correct
17 Correct 78 ms 18084 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 47 ms 7508 KB Output is correct
21 Correct 168 ms 28152 KB Output is correct
22 Correct 177 ms 28092 KB Output is correct
23 Correct 174 ms 28240 KB Output is correct
24 Correct 162 ms 28080 KB Output is correct
25 Correct 72 ms 18324 KB Output is correct
26 Correct 65 ms 18228 KB Output is correct
27 Correct 172 ms 28244 KB Output is correct
28 Correct 162 ms 28052 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1588 KB Output is correct
9 Correct 166 ms 28432 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 12 ms 3672 KB Output is correct
13 Correct 508 ms 75028 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 7 ms 1884 KB Output is correct
17 Correct 267 ms 41732 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 41 ms 7552 KB Output is correct
22 Correct 179 ms 32848 KB Output is correct
23 Correct 167 ms 28312 KB Output is correct
24 Correct 308 ms 51460 KB Output is correct
25 Correct 76 ms 18312 KB Output is correct
26 Correct 87 ms 22780 KB Output is correct
27 Correct 164 ms 28612 KB Output is correct
28 Correct 303 ms 51536 KB Output is correct
29 Correct 81 ms 18260 KB Output is correct

Subtask #4
35.0 / 35.0

# 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 43 ms 7260 KB Output is correct
5 Correct 173 ms 28264 KB Output is correct
6 Correct 167 ms 28240 KB Output is correct
7 Correct 174 ms 28080 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 42 ms 7760 KB Output is correct
10 Correct 179 ms 32852 KB Output is correct
11 Correct 193 ms 27176 KB Output is correct
12 Correct 308 ms 50772 KB Output is correct
13 Correct 0 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 42 ms 7440 KB Output is correct
17 Correct 187 ms 31996 KB Output is correct
18 Correct 180 ms 29264 KB Output is correct
19 Correct 174 ms 28416 KB Output is correct
20 Correct 160 ms 27388 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 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 166 ms 28164 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 400 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 7 ms 1368 KB Output is correct
13 Correct 165 ms 28052 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 972 KB Output is correct
17 Correct 78 ms 18084 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 47 ms 7508 KB Output is correct
21 Correct 168 ms 28152 KB Output is correct
22 Correct 177 ms 28092 KB Output is correct
23 Correct 174 ms 28240 KB Output is correct
24 Correct 162 ms 28080 KB Output is correct
25 Correct 72 ms 18324 KB Output is correct
26 Correct 65 ms 18228 KB Output is correct
27 Correct 172 ms 28244 KB Output is correct
28 Correct 162 ms 28052 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1588 KB Output is correct
37 Correct 166 ms 28432 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 12 ms 3672 KB Output is correct
41 Correct 508 ms 75028 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 7 ms 1884 KB Output is correct
45 Correct 267 ms 41732 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 41 ms 7552 KB Output is correct
50 Correct 179 ms 32848 KB Output is correct
51 Correct 167 ms 28312 KB Output is correct
52 Correct 308 ms 51460 KB Output is correct
53 Correct 76 ms 18312 KB Output is correct
54 Correct 87 ms 22780 KB Output is correct
55 Correct 164 ms 28612 KB Output is correct
56 Correct 303 ms 51536 KB Output is correct
57 Correct 81 ms 18260 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 344 KB Output is correct
60 Correct 3 ms 1116 KB Output is correct
61 Correct 74 ms 17492 KB Output is correct
62 Correct 0 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 41 ms 7556 KB Output is correct
66 Correct 66 ms 17488 KB Output is correct
67 Correct 68 ms 17620 KB Output is correct
68 Correct 67 ms 17600 KB Output is correct
69 Correct 71 ms 17488 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 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 166 ms 28164 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 400 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 7 ms 1368 KB Output is correct
13 Correct 165 ms 28052 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 972 KB Output is correct
17 Correct 78 ms 18084 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 47 ms 7508 KB Output is correct
21 Correct 168 ms 28152 KB Output is correct
22 Correct 177 ms 28092 KB Output is correct
23 Correct 174 ms 28240 KB Output is correct
24 Correct 162 ms 28080 KB Output is correct
25 Correct 72 ms 18324 KB Output is correct
26 Correct 65 ms 18228 KB Output is correct
27 Correct 172 ms 28244 KB Output is correct
28 Correct 162 ms 28052 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1588 KB Output is correct
37 Correct 166 ms 28432 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 12 ms 3672 KB Output is correct
41 Correct 508 ms 75028 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 7 ms 1884 KB Output is correct
45 Correct 267 ms 41732 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 41 ms 7552 KB Output is correct
50 Correct 179 ms 32848 KB Output is correct
51 Correct 167 ms 28312 KB Output is correct
52 Correct 308 ms 51460 KB Output is correct
53 Correct 76 ms 18312 KB Output is correct
54 Correct 87 ms 22780 KB Output is correct
55 Correct 164 ms 28612 KB Output is correct
56 Correct 303 ms 51536 KB Output is correct
57 Correct 81 ms 18260 KB Output is correct
58 Correct 0 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 43 ms 7260 KB Output is correct
62 Correct 173 ms 28264 KB Output is correct
63 Correct 167 ms 28240 KB Output is correct
64 Correct 174 ms 28080 KB Output is correct
65 Correct 0 ms 600 KB Output is correct
66 Correct 42 ms 7760 KB Output is correct
67 Correct 179 ms 32852 KB Output is correct
68 Correct 193 ms 27176 KB Output is correct
69 Correct 308 ms 50772 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 1 ms 348 KB Output is correct
73 Correct 42 ms 7440 KB Output is correct
74 Correct 187 ms 31996 KB Output is correct
75 Correct 180 ms 29264 KB Output is correct
76 Correct 174 ms 28416 KB Output is correct
77 Correct 160 ms 27388 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 1 ms 344 KB Output is correct
80 Correct 3 ms 1116 KB Output is correct
81 Correct 74 ms 17492 KB Output is correct
82 Correct 0 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 41 ms 7556 KB Output is correct
86 Correct 66 ms 17488 KB Output is correct
87 Correct 68 ms 17620 KB Output is correct
88 Correct 67 ms 17600 KB Output is correct
89 Correct 71 ms 17488 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 73 ms 17380 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 344 KB Output is correct
96 Correct 1 ms 348 KB Output is correct
97 Correct 19 ms 5000 KB Output is correct
98 Correct 89 ms 22092 KB Output is correct
99 Correct 70 ms 18132 KB Output is correct
100 Correct 68 ms 17456 KB Output is correct
101 Correct 71 ms 17588 KB Output is correct
102 Incorrect 510 ms 74208 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -