oj.uz

Submission #452055

# Submission time Handle Problem Language Result Execution time Memory
452055 2021-08-03T17:12:25 Z rainboy Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 330 ms 22480 KB 
#include "supertrees.h"
#include <string.h>

using namespace std;

typedef vector<int> vi;

const int N = 1000;

int abs_(int a) { return a > 0 ? a : -a; }

int ds[N];

int find(int i) {
	return ds[i] < 0 ? i : (ds[i] = find(ds[i]));
}

void join(int i, int j) {
	i = find(i);
	j = find(j);
	if (i == j)
		return;
	if (ds[i] > ds[j])
		ds[i] = j;
	else {
		if (ds[i] == ds[j])
			ds[i]--;
		ds[j] = i;
	}
}

char root[N];

int construct(vector<vi> pp) {
	int n = pp.size(), i, j, k;
	vector<vi> aa(n);

	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			if (pp[i][j] == 3)
				return 0;
	for (i = 0; i < n; i++)
		aa[i].resize(n);
	memset(ds, -1, n * sizeof *ds);
	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			if (pp[i][j] == 1)
				join(i, j);
	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			if ((find(i) == find(j)) != (pp[i][j] == 1))
				return 0;
	for (i = 0; i < n; i++)
		if ((j = find(i)) != i)
			aa[i][j] = aa[j][i] = 1;
		else
			root[i] = 1;
	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			if (pp[i][j] == 2)
				join(i, j);
	for (i = 0; i < n; i++)
		for (j = i + 1; j < n; j++)
			if ((find(i) == find(j)) != (pp[i][j] != 0))
				return 0;
	for (i = 0; i < n; i++)
		if (root[i]) {
			int c;

			root[i] = 0;
			k = i, c = 1;
			for (j = 0; j < n; j++)
				if (root[j] && find(j) == find(i))
					root[j] = 0, aa[j][k] = aa[k][j] = 1, k = j, c++;
			if (c == 2)
				return 0;
			if (k != i)
				aa[i][k] = aa[k][i] = 1, k = j;
		}
	build(aa);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 284 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1228 KB Output is correct
7 Correct 251 ms 22440 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 284 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1228 KB Output is correct
7 Correct 251 ms 22440 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 11 ms 1236 KB Output is correct
13 Correct 286 ms 22460 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 7 ms 812 KB Output is correct
17 Correct 116 ms 12520 KB Output is correct
18 Correct 0 ms 288 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 75 ms 6084 KB Output is correct
21 Correct 250 ms 22460 KB Output is correct
22 Correct 330 ms 22468 KB Output is correct
23 Correct 274 ms 22480 KB Output is correct
24 Correct 259 ms 22388 KB Output is correct
25 Correct 107 ms 12448 KB Output is correct
26 Correct 105 ms 12552 KB Output is correct
27 Correct 259 ms 22468 KB Output is correct
28 Correct 256 ms 22476 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 288 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 10 ms 1164 KB Output is correct
9 Correct 246 ms 22296 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1244 KB Output is correct
13 Correct 277 ms 22224 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 284 KB Output is correct
16 Correct 6 ms 772 KB Output is correct
17 Correct 117 ms 12348 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 61 ms 6088 KB Output is correct
22 Correct 250 ms 22272 KB Output is correct
23 Correct 246 ms 22280 KB Output is correct
24 Correct 254 ms 22260 KB Output is correct
25 Correct 114 ms 12320 KB Output is correct
26 Correct 113 ms 12332 KB Output is correct
27 Correct 246 ms 22288 KB Output is correct
28 Correct 259 ms 22236 KB Output is correct
29 Correct 113 ms 12356 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 68 ms 6044 KB Output is correct
5 Correct 243 ms 22212 KB Output is correct
6 Correct 262 ms 22224 KB Output is correct
7 Correct 251 ms 22276 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 71 ms 6048 KB Output is correct
10 Correct 241 ms 22280 KB Output is correct
11 Correct 246 ms 22340 KB Output is correct
12 Correct 252 ms 22312 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 62 ms 6008 KB Output is correct
17 Correct 250 ms 22352 KB Output is correct
18 Correct 248 ms 22464 KB Output is correct
19 Correct 251 ms 22344 KB Output is correct
20 Correct 253 ms 22352 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 284 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1228 KB Output is correct
7 Correct 251 ms 22440 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 11 ms 1236 KB Output is correct
13 Correct 286 ms 22460 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 7 ms 812 KB Output is correct
17 Correct 116 ms 12520 KB Output is correct
18 Correct 0 ms 288 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 75 ms 6084 KB Output is correct
21 Correct 250 ms 22460 KB Output is correct
22 Correct 330 ms 22468 KB Output is correct
23 Correct 274 ms 22480 KB Output is correct
24 Correct 259 ms 22388 KB Output is correct
25 Correct 107 ms 12448 KB Output is correct
26 Correct 105 ms 12552 KB Output is correct
27 Correct 259 ms 22468 KB Output is correct
28 Correct 256 ms 22476 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 1 ms 288 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 10 ms 1164 KB Output is correct
37 Correct 246 ms 22296 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 10 ms 1244 KB Output is correct
41 Correct 277 ms 22224 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 284 KB Output is correct
44 Correct 6 ms 772 KB Output is correct
45 Correct 117 ms 12348 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 61 ms 6088 KB Output is correct
50 Correct 250 ms 22272 KB Output is correct
51 Correct 246 ms 22280 KB Output is correct
52 Correct 254 ms 22260 KB Output is correct
53 Correct 114 ms 12320 KB Output is correct
54 Correct 113 ms 12332 KB Output is correct
55 Correct 246 ms 22288 KB Output is correct
56 Correct 259 ms 22236 KB Output is correct
57 Correct 113 ms 12356 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 5 ms 844 KB Output is correct
61 Correct 121 ms 12480 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 0 ms 204 KB Output is correct
65 Correct 61 ms 6068 KB Output is correct
66 Correct 110 ms 12432 KB Output is correct
67 Correct 106 ms 12484 KB Output is correct
68 Correct 111 ms 12476 KB Output is correct
69 Correct 138 ms 12460 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 284 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1228 KB Output is correct
7 Correct 251 ms 22440 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 11 ms 1236 KB Output is correct
13 Correct 286 ms 22460 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 7 ms 812 KB Output is correct
17 Correct 116 ms 12520 KB Output is correct
18 Correct 0 ms 288 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 75 ms 6084 KB Output is correct
21 Correct 250 ms 22460 KB Output is correct
22 Correct 330 ms 22468 KB Output is correct
23 Correct 274 ms 22480 KB Output is correct
24 Correct 259 ms 22388 KB Output is correct
25 Correct 107 ms 12448 KB Output is correct
26 Correct 105 ms 12552 KB Output is correct
27 Correct 259 ms 22468 KB Output is correct
28 Correct 256 ms 22476 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 1 ms 288 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 10 ms 1164 KB Output is correct
37 Correct 246 ms 22296 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 10 ms 1244 KB Output is correct
41 Correct 277 ms 22224 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 284 KB Output is correct
44 Correct 6 ms 772 KB Output is correct
45 Correct 117 ms 12348 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 61 ms 6088 KB Output is correct
50 Correct 250 ms 22272 KB Output is correct
51 Correct 246 ms 22280 KB Output is correct
52 Correct 254 ms 22260 KB Output is correct
53 Correct 114 ms 12320 KB Output is correct
54 Correct 113 ms 12332 KB Output is correct
55 Correct 246 ms 22288 KB Output is correct
56 Correct 259 ms 22236 KB Output is correct
57 Correct 113 ms 12356 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 68 ms 6044 KB Output is correct
62 Correct 243 ms 22212 KB Output is correct
63 Correct 262 ms 22224 KB Output is correct
64 Correct 251 ms 22276 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 71 ms 6048 KB Output is correct
67 Correct 241 ms 22280 KB Output is correct
68 Correct 246 ms 22340 KB Output is correct
69 Correct 252 ms 22312 KB Output is correct
70 Correct 0 ms 204 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 62 ms 6008 KB Output is correct
74 Correct 250 ms 22352 KB Output is correct
75 Correct 248 ms 22464 KB Output is correct
76 Correct 251 ms 22344 KB Output is correct
77 Correct 253 ms 22352 KB Output is correct
78 Correct 0 ms 204 KB Output is correct
79 Correct 0 ms 204 KB Output is correct
80 Correct 5 ms 844 KB Output is correct
81 Correct 121 ms 12480 KB Output is correct
82 Correct 0 ms 204 KB Output is correct
83 Correct 1 ms 204 KB Output is correct
84 Correct 0 ms 204 KB Output is correct
85 Correct 61 ms 6068 KB Output is correct
86 Correct 110 ms 12432 KB Output is correct
87 Correct 106 ms 12484 KB Output is correct
88 Correct 111 ms 12476 KB Output is correct
89 Correct 138 ms 12460 KB Output is correct
90 Correct 0 ms 204 KB Output is correct
91 Correct 0 ms 204 KB Output is correct
92 Correct 5 ms 588 KB Output is correct
93 Correct 108 ms 8620 KB Output is correct
94 Correct 1 ms 204 KB Output is correct
95 Correct 1 ms 204 KB Output is correct
96 Correct 0 ms 204 KB Output is correct
97 Correct 26 ms 2660 KB Output is correct
98 Correct 105 ms 10100 KB Output is correct
99 Correct 128 ms 10104 KB Output is correct
100 Correct 120 ms 10096 KB Output is correct
101 Correct 105 ms 10100 KB Output is correct
102 Correct 105 ms 10180 KB Output is correct
103 Correct 105 ms 10052 KB Output is correct
104 Correct 104 ms 10084 KB Output is correct
105 Correct 110 ms 10100 KB Output is correct