oj.uz

Submission #771589

# Submission time Handle Problem Language Result Execution time Memory
771589 2023-07-03T07:00:03 Z khshg Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 222 ms 26688 KB 
#include"supertrees.h"
#include<bits/stdc++.h>
using namespace std;

int N;
vector<vector<int>> P, ans, D;
vector<int> par;

int parent(int x) {
	return (par[x] == x ? x : par[x] = parent(par[x]));
}

int unite(int x, int y) {
	x = parent(x);
	y = parent(y);
	if(x == y) return 1;
	if((int)D[x].size() < (int)D[y].size()) swap(x, y);
	for(auto& u : D[x]) for(auto& v : D[y]) {
		if(P[u][v] != 1) return 0;
	}
	for(auto& u : D[y]) D[x].emplace_back(u);
	par[y] = x;
	return 1;
}

int construct(vector<vector<int>> _p) {
	swap(P, _p);
	N = (int)P.size();
	D.resize(N);
	par.resize(N); iota(begin(par), end(par), 0);
	for(int i = 0; i < N; ++i) D[i].push_back(i);
	for(int i = 0; i < N; ++i) {
		for(int j = i + 1; j < N; ++j) {
			if(P[i][j] == 1) {
				if(!unite(i, j)) {
					return 0;
				}
			} else if(P[i][j] == 3) return 0;
		}
	}
	vector<int> comps;
	{
		set<int> s;
		for(int i = 0; i < N; ++i) {
			s.insert(parent(i));
		}
		comps = vector<int>(begin(s), end(s));
	}
	vector<vector<int>> twos(N);
	for(int i = 0; i < N; ++i) {
		for(int j = 0; j < N; ++j) {
			if(P[i][j] == 2) {
				twos[i].push_back(j);
			}
		}
	}
	ans = vector<vector<int>>(N, vector<int>(N, 0));
	map<vector<int>, vector<int>> cycles;
	for(auto& u : comps) {
		for(int i = 0; i < (int)D[u].size(); ++i) {
			if(D[u][i] == u) swap(D[u][i], D[u][0]);
		}
		for(int i = 1; i < (int)D[u].size(); ++i) {
			if(twos[u] != twos[D[u][i]]) return 0;
			ans[u][D[u][i]] = 1;
			ans[D[u][i]][u] = 1;
		}
		twos[u].push_back(u);
		{
			set<int> s;
			for(auto& v : twos[u]) {
				s.insert(parent(v));
			}
			twos[u] = vector<int>(begin(s), end(s));
		}
		cycles[twos[u]].emplace_back(u);
	}
	for(auto& u : cycles) {
		if(u.first != u.second) return 0;
		if(u.first.size() == 2) return 0;
		if(u.first.size() == 1) continue;
		ans[u.first[0]][u.first.back()] = 1;
		ans[u.first.back()][u.first[0]] = 1;
		for(int i = 1; i < (int)u.first.size(); ++i) {
			ans[u.first[i]][u.first[i - 1]] = 1;
			ans[u.first[i - 1]][u.first[i]] = 1;
		}
	}
	build(ans);
	return 1;
}

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 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 151 ms 22608 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 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 151 ms 22608 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 1 ms 212 KB Output is correct
12 Correct 7 ms 1204 KB Output is correct
13 Correct 154 ms 22944 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 300 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 66 ms 8680 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5972 KB Output is correct
21 Correct 154 ms 22564 KB Output is correct
22 Correct 157 ms 22592 KB Output is correct
23 Correct 158 ms 22656 KB Output is correct
24 Correct 151 ms 22816 KB Output is correct
25 Correct 74 ms 8772 KB Output is correct
26 Correct 64 ms 8796 KB Output is correct
27 Correct 187 ms 22584 KB Output is correct
28 Correct 154 ms 22732 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 300 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1236 KB Output is correct
9 Correct 150 ms 22884 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 9 ms 1364 KB Output is correct
13 Correct 222 ms 26688 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 980 KB Output is correct
17 Correct 125 ms 16808 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 39 ms 6092 KB Output is correct
22 Correct 156 ms 23056 KB Output is correct
23 Correct 161 ms 22780 KB Output is correct
24 Correct 188 ms 24712 KB Output is correct
25 Correct 68 ms 12852 KB Output is correct
26 Correct 72 ms 13160 KB Output is correct
27 Correct 153 ms 22684 KB Output is correct
28 Correct 192 ms 24536 KB Output is correct
29 Correct 66 ms 12848 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 296 KB Output is correct
4 Correct 38 ms 6000 KB Output is correct
5 Correct 154 ms 22640 KB Output is correct
6 Correct 155 ms 22632 KB Output is correct
7 Correct 154 ms 22552 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 39 ms 6044 KB Output is correct
10 Correct 157 ms 22988 KB Output is correct
11 Correct 156 ms 22688 KB Output is correct
12 Correct 192 ms 24712 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 39 ms 6044 KB Output is correct
17 Correct 160 ms 22848 KB Output is correct
18 Correct 181 ms 22872 KB Output is correct
19 Correct 159 ms 22416 KB Output is correct
20 Correct 152 ms 22460 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 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 151 ms 22608 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 1 ms 212 KB Output is correct
12 Correct 7 ms 1204 KB Output is correct
13 Correct 154 ms 22944 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 300 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 66 ms 8680 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5972 KB Output is correct
21 Correct 154 ms 22564 KB Output is correct
22 Correct 157 ms 22592 KB Output is correct
23 Correct 158 ms 22656 KB Output is correct
24 Correct 151 ms 22816 KB Output is correct
25 Correct 74 ms 8772 KB Output is correct
26 Correct 64 ms 8796 KB Output is correct
27 Correct 187 ms 22584 KB Output is correct
28 Correct 154 ms 22732 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 300 KB Output is correct
31 Correct 1 ms 304 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 300 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 150 ms 22884 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 9 ms 1364 KB Output is correct
41 Correct 222 ms 26688 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 980 KB Output is correct
45 Correct 125 ms 16808 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 6092 KB Output is correct
50 Correct 156 ms 23056 KB Output is correct
51 Correct 161 ms 22780 KB Output is correct
52 Correct 188 ms 24712 KB Output is correct
53 Correct 68 ms 12852 KB Output is correct
54 Correct 72 ms 13160 KB Output is correct
55 Correct 153 ms 22684 KB Output is correct
56 Correct 192 ms 24536 KB Output is correct
57 Correct 66 ms 12848 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 296 KB Output is correct
60 Correct 3 ms 696 KB Output is correct
61 Correct 73 ms 8796 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 1 ms 296 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 38 ms 6112 KB Output is correct
66 Correct 83 ms 13196 KB Output is correct
67 Correct 61 ms 8596 KB Output is correct
68 Correct 65 ms 12676 KB Output is correct
69 Correct 67 ms 12748 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 1 ms 296 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1236 KB Output is correct
7 Correct 151 ms 22608 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 1 ms 212 KB Output is correct
12 Correct 7 ms 1204 KB Output is correct
13 Correct 154 ms 22944 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 300 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 66 ms 8680 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5972 KB Output is correct
21 Correct 154 ms 22564 KB Output is correct
22 Correct 157 ms 22592 KB Output is correct
23 Correct 158 ms 22656 KB Output is correct
24 Correct 151 ms 22816 KB Output is correct
25 Correct 74 ms 8772 KB Output is correct
26 Correct 64 ms 8796 KB Output is correct
27 Correct 187 ms 22584 KB Output is correct
28 Correct 154 ms 22732 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 300 KB Output is correct
31 Correct 1 ms 304 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 300 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 150 ms 22884 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 9 ms 1364 KB Output is correct
41 Correct 222 ms 26688 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 980 KB Output is correct
45 Correct 125 ms 16808 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 39 ms 6092 KB Output is correct
50 Correct 156 ms 23056 KB Output is correct
51 Correct 161 ms 22780 KB Output is correct
52 Correct 188 ms 24712 KB Output is correct
53 Correct 68 ms 12852 KB Output is correct
54 Correct 72 ms 13160 KB Output is correct
55 Correct 153 ms 22684 KB Output is correct
56 Correct 192 ms 24536 KB Output is correct
57 Correct 66 ms 12848 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 296 KB Output is correct
61 Correct 38 ms 6000 KB Output is correct
62 Correct 154 ms 22640 KB Output is correct
63 Correct 155 ms 22632 KB Output is correct
64 Correct 154 ms 22552 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 39 ms 6044 KB Output is correct
67 Correct 157 ms 22988 KB Output is correct
68 Correct 156 ms 22688 KB Output is correct
69 Correct 192 ms 24712 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 39 ms 6044 KB Output is correct
74 Correct 160 ms 22848 KB Output is correct
75 Correct 181 ms 22872 KB Output is correct
76 Correct 159 ms 22416 KB Output is correct
77 Correct 152 ms 22460 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 1 ms 296 KB Output is correct
80 Correct 3 ms 696 KB Output is correct
81 Correct 73 ms 8796 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 1 ms 296 KB Output is correct
84 Correct 0 ms 212 KB Output is correct
85 Correct 38 ms 6112 KB Output is correct
86 Correct 83 ms 13196 KB Output is correct
87 Correct 61 ms 8596 KB Output is correct
88 Correct 65 ms 12676 KB Output is correct
89 Correct 67 ms 12748 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 0 ms 300 KB Output is correct
92 Correct 3 ms 672 KB Output is correct
93 Correct 64 ms 8572 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 16 ms 2612 KB Output is correct
98 Correct 61 ms 8608 KB Output is correct
99 Correct 61 ms 8588 KB Output is correct
100 Correct 62 ms 8608 KB Output is correct
101 Correct 62 ms 8600 KB Output is correct
102 Correct 62 ms 8608 KB Output is correct
103 Correct 62 ms 8596 KB Output is correct
104 Correct 62 ms 8604 KB Output is correct
105 Correct 65 ms 8612 KB Output is correct