oj.uz

Submission #952788

# Submission time Handle Problem Language Result Execution time Memory
952788 2024-03-24T19:44:28 Z emad234 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 505 ms 74812 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() <= 2)
			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 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1520 KB Output is correct
7 Correct 160 ms 26128 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 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1520 KB Output is correct
7 Correct 160 ms 26128 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 352 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1484 KB Output is correct
13 Correct 162 ms 26128 KB Output is correct
14 Correct 0 ms 432 KB Output is correct
15 Correct 0 ms 352 KB Output is correct
16 Correct 4 ms 1116 KB Output is correct
17 Correct 77 ms 16168 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6736 KB Output is correct
21 Correct 169 ms 26180 KB Output is correct
22 Correct 166 ms 26040 KB Output is correct
23 Correct 202 ms 27416 KB Output is correct
24 Correct 161 ms 27536 KB Output is correct
25 Correct 67 ms 17744 KB Output is correct
26 Correct 65 ms 17428 KB Output is correct
27 Correct 172 ms 27424 KB Output is correct
28 Correct 163 ms 27376 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 1 ms 504 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 1 ms 348 KB Output is correct
8 Correct 7 ms 1452 KB Output is correct
9 Correct 163 ms 27380 KB Output is correct
10 Correct 0 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 505 ms 74388 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 7 ms 1972 KB Output is correct
17 Correct 259 ms 41064 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 46 ms 7716 KB Output is correct
22 Correct 186 ms 32108 KB Output is correct
23 Correct 163 ms 27512 KB Output is correct
24 Correct 307 ms 50732 KB Output is correct
25 Correct 73 ms 17488 KB Output is correct
26 Correct 92 ms 22096 KB Output is correct
27 Correct 166 ms 27896 KB Output is correct
28 Correct 336 ms 50884 KB Output is correct
29 Correct 74 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 452 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 46 ms 7324 KB Output is correct
5 Correct 178 ms 27464 KB Output is correct
6 Correct 173 ms 27404 KB Output is correct
7 Correct 171 ms 27516 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 42 ms 7692 KB Output is correct
10 Correct 183 ms 32040 KB Output is correct
11 Correct 183 ms 27864 KB Output is correct
12 Correct 332 ms 51544 KB Output is correct
13 Correct 1 ms 436 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 41 ms 7548 KB Output is correct
17 Correct 181 ms 32768 KB Output is correct
18 Correct 179 ms 30128 KB Output is correct
19 Correct 179 ms 28948 KB Output is correct
20 Correct 163 ms 28092 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1520 KB Output is correct
7 Correct 160 ms 26128 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 352 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1484 KB Output is correct
13 Correct 162 ms 26128 KB Output is correct
14 Correct 0 ms 432 KB Output is correct
15 Correct 0 ms 352 KB Output is correct
16 Correct 4 ms 1116 KB Output is correct
17 Correct 77 ms 16168 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6736 KB Output is correct
21 Correct 169 ms 26180 KB Output is correct
22 Correct 166 ms 26040 KB Output is correct
23 Correct 202 ms 27416 KB Output is correct
24 Correct 161 ms 27536 KB Output is correct
25 Correct 67 ms 17744 KB Output is correct
26 Correct 65 ms 17428 KB Output is correct
27 Correct 172 ms 27424 KB Output is correct
28 Correct 163 ms 27376 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 504 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 1 ms 348 KB Output is correct
36 Correct 7 ms 1452 KB Output is correct
37 Correct 163 ms 27380 KB Output is correct
38 Correct 0 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 505 ms 74388 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 7 ms 1972 KB Output is correct
45 Correct 259 ms 41064 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 46 ms 7716 KB Output is correct
50 Correct 186 ms 32108 KB Output is correct
51 Correct 163 ms 27512 KB Output is correct
52 Correct 307 ms 50732 KB Output is correct
53 Correct 73 ms 17488 KB Output is correct
54 Correct 92 ms 22096 KB Output is correct
55 Correct 166 ms 27896 KB Output is correct
56 Correct 336 ms 50884 KB Output is correct
57 Correct 74 ms 17492 KB Output is correct
58 Correct 0 ms 344 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 1116 KB Output is correct
61 Correct 76 ms 18176 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 7348 KB Output is correct
66 Correct 70 ms 18048 KB Output is correct
67 Correct 68 ms 18180 KB Output is correct
68 Correct 68 ms 18256 KB Output is correct
69 Correct 88 ms 18052 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 7 ms 1520 KB Output is correct
7 Correct 160 ms 26128 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 352 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1484 KB Output is correct
13 Correct 162 ms 26128 KB Output is correct
14 Correct 0 ms 432 KB Output is correct
15 Correct 0 ms 352 KB Output is correct
16 Correct 4 ms 1116 KB Output is correct
17 Correct 77 ms 16168 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 41 ms 6736 KB Output is correct
21 Correct 169 ms 26180 KB Output is correct
22 Correct 166 ms 26040 KB Output is correct
23 Correct 202 ms 27416 KB Output is correct
24 Correct 161 ms 27536 KB Output is correct
25 Correct 67 ms 17744 KB Output is correct
26 Correct 65 ms 17428 KB Output is correct
27 Correct 172 ms 27424 KB Output is correct
28 Correct 163 ms 27376 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 504 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 1 ms 348 KB Output is correct
36 Correct 7 ms 1452 KB Output is correct
37 Correct 163 ms 27380 KB Output is correct
38 Correct 0 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 505 ms 74388 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 7 ms 1972 KB Output is correct
45 Correct 259 ms 41064 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 46 ms 7716 KB Output is correct
50 Correct 186 ms 32108 KB Output is correct
51 Correct 163 ms 27512 KB Output is correct
52 Correct 307 ms 50732 KB Output is correct
53 Correct 73 ms 17488 KB Output is correct
54 Correct 92 ms 22096 KB Output is correct
55 Correct 166 ms 27896 KB Output is correct
56 Correct 336 ms 50884 KB Output is correct
57 Correct 74 ms 17492 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 452 KB Output is correct
60 Correct 1 ms 344 KB Output is correct
61 Correct 46 ms 7324 KB Output is correct
62 Correct 178 ms 27464 KB Output is correct
63 Correct 173 ms 27404 KB Output is correct
64 Correct 171 ms 27516 KB Output is correct
65 Correct 1 ms 344 KB Output is correct
66 Correct 42 ms 7692 KB Output is correct
67 Correct 183 ms 32040 KB Output is correct
68 Correct 183 ms 27864 KB Output is correct
69 Correct 332 ms 51544 KB Output is correct
70 Correct 1 ms 436 KB Output is correct
71 Correct 1 ms 348 KB Output is correct
72 Correct 1 ms 348 KB Output is correct
73 Correct 41 ms 7548 KB Output is correct
74 Correct 181 ms 32768 KB Output is correct
75 Correct 179 ms 30128 KB Output is correct
76 Correct 179 ms 28948 KB Output is correct
77 Correct 163 ms 28092 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 3 ms 1116 KB Output is correct
81 Correct 76 ms 18176 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 7348 KB Output is correct
86 Correct 70 ms 18048 KB Output is correct
87 Correct 68 ms 18180 KB Output is correct
88 Correct 68 ms 18256 KB Output is correct
89 Correct 88 ms 18052 KB Output is correct
90 Correct 1 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 72 ms 18052 KB Output is correct
94 Correct 1 ms 348 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 19 ms 4956 KB Output is correct
98 Correct 91 ms 22556 KB Output is correct
99 Correct 71 ms 18640 KB Output is correct
100 Correct 69 ms 18208 KB Output is correct
101 Correct 72 ms 17940 KB Output is correct
102 Incorrect 486 ms 74812 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -