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Submission #823131

# Submission time Handle Problem Language Result Execution time Memory
823131 2023-08-12T08:20:11 Z Sohsoh84 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 187 ms 24056 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e5 + 10;

#define sep		' '
#define debug(x)	cerr << #x << ": " << x << endl;

int f[MAXN], sz[MAXN], L[MAXN], f2[MAXN], ind[MAXN];

vector<vector<int>> answer;

inline void add(int i, int j) {
	answer[i][j] = answer[j][i] = 1;
}

int construct(vector<vector<int>> p) {
	int n = p.size();
	for (int i = 0; i < n; i++) {
		vector<int> row;
		row.resize(n, 0);
		answer.push_back(row);
	}

	vector<int> roots;
	for (int i = 0; i < n; i++) {
		f[i] = i;
		int lst = i;
		for (int j = 0; j < i; j++)
			if (p[i][j] == 1)
				lst = j;

		if (lst != i) add(lst, i), f[i] = f[lst];
		else roots.push_back(i);
	}

	int m = roots.size();
	for (int i = 0; i < m; i++) {
		f2[i] = i;	
		ind[roots[i]] = i;

		int lst = i;
		for (int j = 0; j < i; j++)
			if (p[roots[i]][roots[j]] == 2)
				lst = j;

		if (lst != i) {
			add(roots[i], roots[lst]);
			f2[i] = f2[lst];
			L[f2[i]] = i;
		} else L[i] = i;

		sz[f2[i]]++;
	}

	for (int i = 0; i < m; i++) {
		if (L[i] && L[i] != i) {
			add(roots[i], roots[L[i]]);
		}

		if (sz[i] == 2) return 0;
	}

	for (int i = 0; i < n; i++) {
		for (int j = i + 1; j < n; j++) {
			if (f[i] == f[j] && p[i][j] != 1) return 0;
			if (f[i] != f[j] && f2[ind[f[i]]] == f2[ind[f[j]]] && p[i][j] != 2) return 0;
			if (f[i] != f[j] && f2[ind[f[i]]] != f2[ind[f[j]]] && p[i][j] != 0) return 0;
		}
	}

	build(answer);
	return 1;
}

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 1 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 155 ms 22032 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 1 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 155 ms 22032 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 1192 KB Output is correct
13 Correct 155 ms 22008 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 796 KB Output is correct
17 Correct 86 ms 12176 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 224 KB Output is correct
20 Correct 46 ms 5776 KB Output is correct
21 Correct 160 ms 23956 KB Output is correct
22 Correct 170 ms 24020 KB Output is correct
23 Correct 164 ms 24012 KB Output is correct
24 Correct 167 ms 24056 KB Output is correct
25 Correct 69 ms 14092 KB Output is correct
26 Correct 67 ms 14076 KB Output is correct
27 Correct 164 ms 23932 KB Output is correct
28 Correct 155 ms 24012 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 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 232 KB Output is correct
5 Correct 0 ms 212 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 1148 KB Output is correct
9 Correct 162 ms 22088 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 1108 KB Output is correct
13 Correct 158 ms 22032 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 70 ms 12176 KB Output is correct
18 Correct 0 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 5732 KB Output is correct
22 Correct 171 ms 22032 KB Output is correct
23 Correct 160 ms 22040 KB Output is correct
24 Correct 158 ms 22092 KB Output is correct
25 Correct 66 ms 12192 KB Output is correct
26 Correct 72 ms 12180 KB Output is correct
27 Correct 157 ms 22028 KB Output is correct
28 Correct 159 ms 22032 KB Output is correct
29 Correct 70 ms 12176 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 47 ms 5692 KB Output is correct
5 Correct 187 ms 22080 KB Output is correct
6 Correct 156 ms 22028 KB Output is correct
7 Correct 160 ms 22032 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 47 ms 5908 KB Output is correct
10 Correct 159 ms 21984 KB Output is correct
11 Correct 156 ms 21996 KB Output is correct
12 Correct 171 ms 22096 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 40 ms 5780 KB Output is correct
17 Correct 163 ms 22032 KB Output is correct
18 Correct 166 ms 22028 KB Output is correct
19 Correct 156 ms 22004 KB Output is correct
20 Correct 177 ms 22076 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 1 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 155 ms 22032 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 1192 KB Output is correct
13 Correct 155 ms 22008 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 796 KB Output is correct
17 Correct 86 ms 12176 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 224 KB Output is correct
20 Correct 46 ms 5776 KB Output is correct
21 Correct 160 ms 23956 KB Output is correct
22 Correct 170 ms 24020 KB Output is correct
23 Correct 164 ms 24012 KB Output is correct
24 Correct 167 ms 24056 KB Output is correct
25 Correct 69 ms 14092 KB Output is correct
26 Correct 67 ms 14076 KB Output is correct
27 Correct 164 ms 23932 KB Output is correct
28 Correct 155 ms 24012 KB Output is correct
29 Correct 1 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 232 KB Output is correct
33 Correct 0 ms 212 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 1148 KB Output is correct
37 Correct 162 ms 22088 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 7 ms 1108 KB Output is correct
41 Correct 158 ms 22032 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 724 KB Output is correct
45 Correct 70 ms 12176 KB Output is correct
46 Correct 0 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 5732 KB Output is correct
50 Correct 171 ms 22032 KB Output is correct
51 Correct 160 ms 22040 KB Output is correct
52 Correct 158 ms 22092 KB Output is correct
53 Correct 66 ms 12192 KB Output is correct
54 Correct 72 ms 12180 KB Output is correct
55 Correct 157 ms 22028 KB Output is correct
56 Correct 159 ms 22032 KB Output is correct
57 Correct 70 ms 12176 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 3 ms 840 KB Output is correct
61 Correct 70 ms 14080 KB Output is correct
62 Correct 1 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 41 ms 6204 KB Output is correct
66 Correct 67 ms 14088 KB Output is correct
67 Correct 68 ms 14076 KB Output is correct
68 Correct 66 ms 14080 KB Output is correct
69 Correct 66 ms 14076 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 1 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 155 ms 22032 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 1192 KB Output is correct
13 Correct 155 ms 22008 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 796 KB Output is correct
17 Correct 86 ms 12176 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 224 KB Output is correct
20 Correct 46 ms 5776 KB Output is correct
21 Correct 160 ms 23956 KB Output is correct
22 Correct 170 ms 24020 KB Output is correct
23 Correct 164 ms 24012 KB Output is correct
24 Correct 167 ms 24056 KB Output is correct
25 Correct 69 ms 14092 KB Output is correct
26 Correct 67 ms 14076 KB Output is correct
27 Correct 164 ms 23932 KB Output is correct
28 Correct 155 ms 24012 KB Output is correct
29 Correct 1 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 232 KB Output is correct
33 Correct 0 ms 212 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 1148 KB Output is correct
37 Correct 162 ms 22088 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 7 ms 1108 KB Output is correct
41 Correct 158 ms 22032 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 724 KB Output is correct
45 Correct 70 ms 12176 KB Output is correct
46 Correct 0 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 5732 KB Output is correct
50 Correct 171 ms 22032 KB Output is correct
51 Correct 160 ms 22040 KB Output is correct
52 Correct 158 ms 22092 KB Output is correct
53 Correct 66 ms 12192 KB Output is correct
54 Correct 72 ms 12180 KB Output is correct
55 Correct 157 ms 22028 KB Output is correct
56 Correct 159 ms 22032 KB Output is correct
57 Correct 70 ms 12176 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 47 ms 5692 KB Output is correct
62 Correct 187 ms 22080 KB Output is correct
63 Correct 156 ms 22028 KB Output is correct
64 Correct 160 ms 22032 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 47 ms 5908 KB Output is correct
67 Correct 159 ms 21984 KB Output is correct
68 Correct 156 ms 21996 KB Output is correct
69 Correct 171 ms 22096 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 40 ms 5780 KB Output is correct
74 Correct 163 ms 22032 KB Output is correct
75 Correct 166 ms 22028 KB Output is correct
76 Correct 156 ms 22004 KB Output is correct
77 Correct 177 ms 22076 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 3 ms 840 KB Output is correct
81 Correct 70 ms 14080 KB Output is correct
82 Correct 1 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 41 ms 6204 KB Output is correct
86 Correct 67 ms 14088 KB Output is correct
87 Correct 68 ms 14076 KB Output is correct
88 Correct 66 ms 14080 KB Output is correct
89 Correct 66 ms 14076 KB Output is correct
90 Correct 1 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 3 ms 852 KB Output is correct
93 Correct 69 ms 14080 KB Output is correct
94 Correct 1 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 17 ms 3716 KB Output is correct
98 Correct 68 ms 14080 KB Output is correct
99 Correct 68 ms 14076 KB Output is correct
100 Correct 69 ms 14080 KB Output is correct
101 Correct 69 ms 14092 KB Output is correct
102 Correct 74 ms 14080 KB Output is correct
103 Correct 67 ms 14080 KB Output is correct
104 Correct 69 ms 14076 KB Output is correct
105 Correct 70 ms 14028 KB Output is correct