oj.uz

Submission #952786

# Submission time Handle Problem Language Result Execution time Memory
952786 2024-03-24T19:43:38 Z emad234 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 513 ms 75092 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] || v1[i].empty())
			continue;
		if (v1[i].size() == 1)
			return 0;
		v1[i].insert(i);
		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;
		}
		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 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1452 KB Output is correct
7 Correct 180 ms 27476 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 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1452 KB Output is correct
7 Correct 180 ms 27476 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 1372 KB Output is correct
13 Correct 159 ms 27424 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1112 KB Output is correct
17 Correct 76 ms 17428 KB Output is correct
18 Correct 0 ms 544 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 7260 KB Output is correct
21 Correct 169 ms 27472 KB Output is correct
22 Correct 164 ms 27424 KB Output is correct
23 Correct 171 ms 27476 KB Output is correct
24 Correct 177 ms 27564 KB Output is correct
25 Correct 66 ms 17488 KB Output is correct
26 Correct 65 ms 17492 KB Output is correct
27 Correct 177 ms 27540 KB Output is correct
28 Correct 164 ms 27332 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 1 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 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1428 KB Output is correct
9 Correct 165 ms 27472 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 12 ms 3420 KB Output is correct
13 Correct 513 ms 74424 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 6 ms 1884 KB Output is correct
17 Correct 293 ms 41124 KB Output is correct
18 Correct 0 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 7556 KB Output is correct
22 Correct 179 ms 32084 KB Output is correct
23 Correct 163 ms 27732 KB Output is correct
24 Correct 301 ms 50708 KB Output is correct
25 Correct 71 ms 17692 KB Output is correct
26 Correct 86 ms 22100 KB Output is correct
27 Correct 159 ms 27608 KB Output is correct
28 Correct 317 ms 50696 KB Output is correct
29 Correct 73 ms 17492 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 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 42 ms 7304 KB Output is correct
5 Correct 192 ms 27676 KB Output is correct
6 Correct 168 ms 27496 KB Output is correct
7 Correct 196 ms 27732 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 41 ms 7552 KB Output is correct
10 Correct 186 ms 31996 KB Output is correct
11 Correct 166 ms 27668 KB Output is correct
12 Correct 295 ms 50772 KB Output is correct
13 Correct 1 ms 440 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 41 ms 7520 KB Output is correct
17 Correct 179 ms 32136 KB Output is correct
18 Correct 191 ms 29532 KB Output is correct
19 Correct 168 ms 28244 KB Output is correct
20 Correct 170 ms 27736 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 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1452 KB Output is correct
7 Correct 180 ms 27476 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 1372 KB Output is correct
13 Correct 159 ms 27424 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1112 KB Output is correct
17 Correct 76 ms 17428 KB Output is correct
18 Correct 0 ms 544 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 7260 KB Output is correct
21 Correct 169 ms 27472 KB Output is correct
22 Correct 164 ms 27424 KB Output is correct
23 Correct 171 ms 27476 KB Output is correct
24 Correct 177 ms 27564 KB Output is correct
25 Correct 66 ms 17488 KB Output is correct
26 Correct 65 ms 17492 KB Output is correct
27 Correct 177 ms 27540 KB Output is correct
28 Correct 164 ms 27332 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 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 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 7 ms 1428 KB Output is correct
37 Correct 165 ms 27472 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 12 ms 3420 KB Output is correct
41 Correct 513 ms 74424 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 6 ms 1884 KB Output is correct
45 Correct 293 ms 41124 KB Output is correct
46 Correct 0 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 7556 KB Output is correct
50 Correct 179 ms 32084 KB Output is correct
51 Correct 163 ms 27732 KB Output is correct
52 Correct 301 ms 50708 KB Output is correct
53 Correct 71 ms 17692 KB Output is correct
54 Correct 86 ms 22100 KB Output is correct
55 Correct 159 ms 27608 KB Output is correct
56 Correct 317 ms 50696 KB Output is correct
57 Correct 73 ms 17492 KB Output is correct
58 Correct 0 ms 600 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 4 ms 1116 KB Output is correct
61 Correct 75 ms 17556 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 1 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 42 ms 7504 KB Output is correct
66 Correct 67 ms 17488 KB Output is correct
67 Correct 67 ms 17488 KB Output is correct
68 Correct 65 ms 17432 KB Output is correct
69 Correct 70 ms 17372 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 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1452 KB Output is correct
7 Correct 180 ms 27476 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 1372 KB Output is correct
13 Correct 159 ms 27424 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 5 ms 1112 KB Output is correct
17 Correct 76 ms 17428 KB Output is correct
18 Correct 0 ms 544 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 7260 KB Output is correct
21 Correct 169 ms 27472 KB Output is correct
22 Correct 164 ms 27424 KB Output is correct
23 Correct 171 ms 27476 KB Output is correct
24 Correct 177 ms 27564 KB Output is correct
25 Correct 66 ms 17488 KB Output is correct
26 Correct 65 ms 17492 KB Output is correct
27 Correct 177 ms 27540 KB Output is correct
28 Correct 164 ms 27332 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 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 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 7 ms 1428 KB Output is correct
37 Correct 165 ms 27472 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 12 ms 3420 KB Output is correct
41 Correct 513 ms 74424 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 6 ms 1884 KB Output is correct
45 Correct 293 ms 41124 KB Output is correct
46 Correct 0 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 7556 KB Output is correct
50 Correct 179 ms 32084 KB Output is correct
51 Correct 163 ms 27732 KB Output is correct
52 Correct 301 ms 50708 KB Output is correct
53 Correct 71 ms 17692 KB Output is correct
54 Correct 86 ms 22100 KB Output is correct
55 Correct 159 ms 27608 KB Output is correct
56 Correct 317 ms 50696 KB Output is correct
57 Correct 73 ms 17492 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 42 ms 7304 KB Output is correct
62 Correct 192 ms 27676 KB Output is correct
63 Correct 168 ms 27496 KB Output is correct
64 Correct 196 ms 27732 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Correct 41 ms 7552 KB Output is correct
67 Correct 186 ms 31996 KB Output is correct
68 Correct 166 ms 27668 KB Output is correct
69 Correct 295 ms 50772 KB Output is correct
70 Correct 1 ms 440 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 41 ms 7520 KB Output is correct
74 Correct 179 ms 32136 KB Output is correct
75 Correct 191 ms 29532 KB Output is correct
76 Correct 168 ms 28244 KB Output is correct
77 Correct 170 ms 27736 KB Output is correct
78 Correct 0 ms 600 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 4 ms 1116 KB Output is correct
81 Correct 75 ms 17556 KB Output is correct
82 Correct 1 ms 348 KB Output is correct
83 Correct 1 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 42 ms 7504 KB Output is correct
86 Correct 67 ms 17488 KB Output is correct
87 Correct 67 ms 17488 KB Output is correct
88 Correct 65 ms 17432 KB Output is correct
89 Correct 70 ms 17372 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 78 ms 17812 KB Output is correct
94 Correct 1 ms 348 KB Output is correct
95 Correct 1 ms 348 KB Output is correct
96 Correct 1 ms 344 KB Output is correct
97 Correct 19 ms 5000 KB Output is correct
98 Correct 89 ms 22872 KB Output is correct
99 Correct 87 ms 18848 KB Output is correct
100 Correct 78 ms 18568 KB Output is correct
101 Correct 71 ms 18260 KB Output is correct
102 Incorrect 511 ms 75092 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -