oj.uz

Submission #823616

# Submission time Handle Problem Language Result Execution time Memory
823616 2023-08-12T21:55:13 Z GusterGoose27 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 198 ms 24068 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

const int MAXN = 1e3+5;

using namespace std;
int n;
int uf[MAXN];

int find(int i) {
	return uf[i] == i ? i : uf[i] = find(uf[i]);
}

void merge(int a, int b) {
	a = find(a);
	b = find(b);
	assert(a != b);
	uf[a] = b;
}

bool vis[MAXN];

int construct(vector<vector<int>> p) {
	n = p.size();
	iota(uf, uf+n, 0);
	vector<vector<int>> answer(n, vector<int>(n, 0));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (p[i][j] == 3) return 0;
			if (find(i) != find(j) && p[i][j] == 1) {
				answer[i][j] = answer[j][i] = 1;
				merge(i, j);
			}
		}
	}
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (p[i][j] == 1 && find(i) != find(j)) return 0;
			if (p[i][j] != 1 && find(i) == find(j)) return 0;
		}
	}
	// all 1 connections are dealt with
	for (int i = 0; i < n; i++) {
		vector<int> vals;
		int cur = find(i);
		if (vis[cur]) continue;
		do {
			if (vals.size()) merge(vals.back(), cur);
			vals.push_back(cur);
			vis[cur] = 1;
			bool f = 0;
			for (int j = 0; j < n; j++) {
				if (uf[j] != j || vis[j] || j == find(i)) continue;
				if (p[cur][j] == 2) {
					f = 1;
					cur = j;
					break;
				}
			}
			if (!f) cur = find(i);
		} while (cur != find(i));
		if (vals.size() == 2) return 0;
		if (vals.size() > 1) {
			for (int j = 0; j < vals.size(); j++) {
				answer[vals[j]][vals[(j+1)%vals.size()]] = 
				answer[vals[(j+1)%vals.size()]][vals[j]] = 1;
			}
		}
	}
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (p[i][j] >= 1 && find(i) != find(j)) return 0;
			if (p[i][j] == 0 && find(i) == find(j)) return 0;
		}
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |    for (int j = 0; j < vals.size(); j++) {
      |                    ~~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 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 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 167 ms 22024 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 167 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1120 KB Output is correct
13 Correct 167 ms 21960 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 77 ms 12052 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 42 ms 5644 KB Output is correct
21 Correct 175 ms 22024 KB Output is correct
22 Correct 169 ms 21940 KB Output is correct
23 Correct 198 ms 22028 KB Output is correct
24 Correct 164 ms 21928 KB Output is correct
25 Correct 75 ms 12040 KB Output is correct
26 Correct 66 ms 12136 KB Output is correct
27 Correct 181 ms 22012 KB Output is correct
28 Correct 164 ms 21956 KB Output is correct

Subtask #3
19.0 / 19.0

# 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 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 300 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 7 ms 1212 KB Output is correct
9 Correct 163 ms 23940 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1188 KB Output is correct
13 Correct 163 ms 24032 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 72 ms 14076 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 42 ms 6256 KB Output is correct
22 Correct 173 ms 23980 KB Output is correct
23 Correct 166 ms 23928 KB Output is correct
24 Correct 179 ms 23888 KB Output is correct
25 Correct 69 ms 14076 KB Output is correct
26 Correct 69 ms 14088 KB Output is correct
27 Correct 167 ms 23928 KB Output is correct
28 Correct 176 ms 24068 KB Output is correct
29 Correct 68 ms 14068 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 212 KB Output is correct
4 Correct 42 ms 5768 KB Output is correct
5 Correct 171 ms 22024 KB Output is correct
6 Correct 170 ms 21964 KB Output is correct
7 Correct 178 ms 22028 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 41 ms 5700 KB Output is correct
10 Correct 178 ms 21940 KB Output is correct
11 Correct 165 ms 22012 KB Output is correct
12 Correct 174 ms 22020 KB Output is correct
13 Correct 0 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 50 ms 5676 KB Output is correct
17 Correct 172 ms 22060 KB Output is correct
18 Correct 168 ms 22032 KB Output is correct
19 Correct 164 ms 22032 KB Output is correct
20 Correct 173 ms 22024 KB Output is correct

Subtask #5
21.0 / 21.0

# 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 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 167 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1120 KB Output is correct
13 Correct 167 ms 21960 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 77 ms 12052 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 42 ms 5644 KB Output is correct
21 Correct 175 ms 22024 KB Output is correct
22 Correct 169 ms 21940 KB Output is correct
23 Correct 198 ms 22028 KB Output is correct
24 Correct 164 ms 21928 KB Output is correct
25 Correct 75 ms 12040 KB Output is correct
26 Correct 66 ms 12136 KB Output is correct
27 Correct 181 ms 22012 KB Output is correct
28 Correct 164 ms 21956 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 300 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1212 KB Output is correct
37 Correct 163 ms 23940 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1188 KB Output is correct
41 Correct 163 ms 24032 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 3 ms 852 KB Output is correct
45 Correct 72 ms 14076 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 42 ms 6256 KB Output is correct
50 Correct 173 ms 23980 KB Output is correct
51 Correct 166 ms 23928 KB Output is correct
52 Correct 179 ms 23888 KB Output is correct
53 Correct 69 ms 14076 KB Output is correct
54 Correct 69 ms 14088 KB Output is correct
55 Correct 167 ms 23928 KB Output is correct
56 Correct 176 ms 24068 KB Output is correct
57 Correct 68 ms 14068 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 5 ms 852 KB Output is correct
61 Correct 71 ms 14084 KB Output is correct
62 Correct 0 ms 212 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 0 ms 212 KB Output is correct
65 Correct 45 ms 6180 KB Output is correct
66 Correct 69 ms 14068 KB Output is correct
67 Correct 68 ms 14028 KB Output is correct
68 Correct 71 ms 14084 KB Output is correct
69 Correct 68 ms 14084 KB Output is correct

Subtask #6
4.0 / 4.0

# 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 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1108 KB Output is correct
7 Correct 167 ms 22024 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 7 ms 1120 KB Output is correct
13 Correct 167 ms 21960 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 77 ms 12052 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 42 ms 5644 KB Output is correct
21 Correct 175 ms 22024 KB Output is correct
22 Correct 169 ms 21940 KB Output is correct
23 Correct 198 ms 22028 KB Output is correct
24 Correct 164 ms 21928 KB Output is correct
25 Correct 75 ms 12040 KB Output is correct
26 Correct 66 ms 12136 KB Output is correct
27 Correct 181 ms 22012 KB Output is correct
28 Correct 164 ms 21956 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 300 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 7 ms 1212 KB Output is correct
37 Correct 163 ms 23940 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 7 ms 1188 KB Output is correct
41 Correct 163 ms 24032 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 3 ms 852 KB Output is correct
45 Correct 72 ms 14076 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 42 ms 6256 KB Output is correct
50 Correct 173 ms 23980 KB Output is correct
51 Correct 166 ms 23928 KB Output is correct
52 Correct 179 ms 23888 KB Output is correct
53 Correct 69 ms 14076 KB Output is correct
54 Correct 69 ms 14088 KB Output is correct
55 Correct 167 ms 23928 KB Output is correct
56 Correct 176 ms 24068 KB Output is correct
57 Correct 68 ms 14068 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 212 KB Output is correct
61 Correct 42 ms 5768 KB Output is correct
62 Correct 171 ms 22024 KB Output is correct
63 Correct 170 ms 21964 KB Output is correct
64 Correct 178 ms 22028 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 41 ms 5700 KB Output is correct
67 Correct 178 ms 21940 KB Output is correct
68 Correct 165 ms 22012 KB Output is correct
69 Correct 174 ms 22020 KB Output is correct
70 Correct 0 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 50 ms 5676 KB Output is correct
74 Correct 172 ms 22060 KB Output is correct
75 Correct 168 ms 22032 KB Output is correct
76 Correct 164 ms 22032 KB Output is correct
77 Correct 173 ms 22024 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 0 ms 212 KB Output is correct
80 Correct 5 ms 852 KB Output is correct
81 Correct 71 ms 14084 KB Output is correct
82 Correct 0 ms 212 KB Output is correct
83 Correct 0 ms 212 KB Output is correct
84 Correct 0 ms 212 KB Output is correct
85 Correct 45 ms 6180 KB Output is correct
86 Correct 69 ms 14068 KB Output is correct
87 Correct 68 ms 14028 KB Output is correct
88 Correct 71 ms 14084 KB Output is correct
89 Correct 68 ms 14084 KB Output is correct
90 Correct 1 ms 300 KB Output is correct
91 Correct 1 ms 216 KB Output is correct
92 Correct 3 ms 800 KB Output is correct
93 Correct 70 ms 14068 KB Output is correct
94 Correct 0 ms 212 KB Output is correct
95 Correct 0 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 16 ms 3704 KB Output is correct
98 Correct 67 ms 14080 KB Output is correct
99 Correct 75 ms 14072 KB Output is correct
100 Correct 64 ms 14068 KB Output is correct
101 Correct 65 ms 14028 KB Output is correct
102 Correct 68 ms 14068 KB Output is correct
103 Correct 64 ms 14028 KB Output is correct
104 Correct 64 ms 14088 KB Output is correct
105 Correct 69 ms 14080 KB Output is correct