oj.uz

Submission #952793

# Submission time Handle Problem Language Result Execution time Memory
952793 2024-03-24T20:03:29 Z emad234 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 489 ms 73396 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;
		if (v1[i].size() == 2 || 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) || (!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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 416 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1464 KB Output is correct
7 Correct 169 ms 26132 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 416 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1464 KB Output is correct
7 Correct 169 ms 26132 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 164 ms 26460 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 74 ms 16148 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 47 ms 6992 KB Output is correct
21 Correct 166 ms 26140 KB Output is correct
22 Correct 170 ms 26316 KB Output is correct
23 Correct 185 ms 26148 KB Output is correct
24 Correct 160 ms 26192 KB Output is correct
25 Correct 65 ms 16156 KB Output is correct
26 Correct 64 ms 16212 KB Output is correct
27 Correct 175 ms 26192 KB Output is correct
28 Correct 169 ms 26196 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 7 ms 1372 KB Output is correct
9 Correct 161 ms 26192 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 544 KB Output is correct
12 Correct 12 ms 3164 KB Output is correct
13 Correct 489 ms 73396 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 1888 KB Output is correct
17 Correct 261 ms 39712 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 42 ms 7316 KB Output is correct
22 Correct 183 ms 31088 KB Output is correct
23 Correct 163 ms 26448 KB Output is correct
24 Correct 301 ms 49492 KB Output is correct
25 Correct 70 ms 16400 KB Output is correct
26 Correct 85 ms 21008 KB Output is correct
27 Correct 160 ms 26448 KB Output is correct
28 Correct 302 ms 49488 KB Output is correct
29 Correct 70 ms 16408 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 0 ms 348 KB Output is correct
4 Correct 43 ms 6996 KB Output is correct
5 Correct 165 ms 26316 KB Output is correct
6 Correct 175 ms 26132 KB Output is correct
7 Correct 170 ms 26248 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 41 ms 7124 KB Output is correct
10 Correct 179 ms 30740 KB Output is correct
11 Correct 161 ms 26452 KB Output is correct
12 Correct 315 ms 49496 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 41 ms 7064 KB Output is correct
17 Correct 183 ms 30744 KB Output is correct
18 Correct 183 ms 28240 KB Output is correct
19 Correct 168 ms 26960 KB Output is correct
20 Correct 170 ms 26472 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 416 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1464 KB Output is correct
7 Correct 169 ms 26132 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 164 ms 26460 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 74 ms 16148 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 47 ms 6992 KB Output is correct
21 Correct 166 ms 26140 KB Output is correct
22 Correct 170 ms 26316 KB Output is correct
23 Correct 185 ms 26148 KB Output is correct
24 Correct 160 ms 26192 KB Output is correct
25 Correct 65 ms 16156 KB Output is correct
26 Correct 64 ms 16212 KB Output is correct
27 Correct 175 ms 26192 KB Output is correct
28 Correct 169 ms 26196 KB Output is correct
29 Correct 0 ms 344 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 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 161 ms 26192 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 1 ms 544 KB Output is correct
40 Correct 12 ms 3164 KB Output is correct
41 Correct 489 ms 73396 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 1888 KB Output is correct
45 Correct 261 ms 39712 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 42 ms 7316 KB Output is correct
50 Correct 183 ms 31088 KB Output is correct
51 Correct 163 ms 26448 KB Output is correct
52 Correct 301 ms 49492 KB Output is correct
53 Correct 70 ms 16400 KB Output is correct
54 Correct 85 ms 21008 KB Output is correct
55 Correct 160 ms 26448 KB Output is correct
56 Correct 302 ms 49488 KB Output is correct
57 Correct 70 ms 16408 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 872 KB Output is correct
61 Correct 74 ms 16212 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 344 KB Output is correct
65 Correct 41 ms 6996 KB Output is correct
66 Correct 65 ms 16208 KB Output is correct
67 Correct 64 ms 16208 KB Output is correct
68 Correct 66 ms 16148 KB Output is correct
69 Correct 69 ms 16332 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 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 416 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1464 KB Output is correct
7 Correct 169 ms 26132 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 592 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 164 ms 26460 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 74 ms 16148 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 47 ms 6992 KB Output is correct
21 Correct 166 ms 26140 KB Output is correct
22 Correct 170 ms 26316 KB Output is correct
23 Correct 185 ms 26148 KB Output is correct
24 Correct 160 ms 26192 KB Output is correct
25 Correct 65 ms 16156 KB Output is correct
26 Correct 64 ms 16212 KB Output is correct
27 Correct 175 ms 26192 KB Output is correct
28 Correct 169 ms 26196 KB Output is correct
29 Correct 0 ms 344 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 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 161 ms 26192 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 1 ms 544 KB Output is correct
40 Correct 12 ms 3164 KB Output is correct
41 Correct 489 ms 73396 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 1888 KB Output is correct
45 Correct 261 ms 39712 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 42 ms 7316 KB Output is correct
50 Correct 183 ms 31088 KB Output is correct
51 Correct 163 ms 26448 KB Output is correct
52 Correct 301 ms 49492 KB Output is correct
53 Correct 70 ms 16400 KB Output is correct
54 Correct 85 ms 21008 KB Output is correct
55 Correct 160 ms 26448 KB Output is correct
56 Correct 302 ms 49488 KB Output is correct
57 Correct 70 ms 16408 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 43 ms 6996 KB Output is correct
62 Correct 165 ms 26316 KB Output is correct
63 Correct 175 ms 26132 KB Output is correct
64 Correct 170 ms 26248 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 41 ms 7124 KB Output is correct
67 Correct 179 ms 30740 KB Output is correct
68 Correct 161 ms 26452 KB Output is correct
69 Correct 315 ms 49496 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 41 ms 7064 KB Output is correct
74 Correct 183 ms 30744 KB Output is correct
75 Correct 183 ms 28240 KB Output is correct
76 Correct 168 ms 26960 KB Output is correct
77 Correct 170 ms 26472 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 872 KB Output is correct
81 Correct 74 ms 16212 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 1 ms 344 KB Output is correct
85 Correct 41 ms 6996 KB Output is correct
86 Correct 65 ms 16208 KB Output is correct
87 Correct 64 ms 16208 KB Output is correct
88 Correct 66 ms 16148 KB Output is correct
89 Correct 69 ms 16332 KB Output is correct
90 Correct 1 ms 344 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 3 ms 1088 KB Output is correct
93 Correct 84 ms 16148 KB Output is correct
94 Correct 1 ms 344 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 344 KB Output is correct
97 Correct 20 ms 4700 KB Output is correct
98 Correct 88 ms 20816 KB Output is correct
99 Correct 89 ms 16680 KB Output is correct
100 Correct 69 ms 16208 KB Output is correct
101 Correct 71 ms 16212 KB Output is correct
102 Incorrect 480 ms 73188 KB Answer gives possible 1 while actual possible 0
103 Halted 0 ms 0 KB -