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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#290949#5089. 环覆盖zzzYheng20 549ms210448kbC++17797b2023-12-25 22:00:282023-12-25 22:00:29

Judging History

你现在查看的是最新测评结果

  • [2023-12-25 22:00:29]
  • 评测
  • 测评结果:20
  • 用时:549ms
  • 内存:210448kb
  • [2023-12-25 22:00:28]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

const int kMaxN = 21;
const int kMaxM = 50;
const int kMaxPowN = (1 << 20) + 1;

const int kMod = 1e9 + 7;

int n, m;

int u[kMaxM], v[kMaxM];

int f[2][kMaxPowN][kMaxM];

void add(int &x, int y) {
	x += y;
	if (x >= kMod) x -= kMod;
}

int main() {
	cin >> n >> m;
	for (int i = 1; i <= m; ++i) {
		cin >> u[i] >> v[i];
	}
	f[0][0][0] = 1;
	for (int i = 1; i <= m; ++i) {
		for (int j = 0; j < (1 << n); ++j) {
			for (int k = 0; k <= m; ++k) {
				f[i & 1][j][k] = 0;
				add(f[i & 1][j][k], f[i - 1 & 1][j][k]);
				if (k) add(f[i & 1][j][k], f[i - 1 & 1][j ^ (1 << u[i] - 1) ^ (1 << v[i] - 1)][k - 1]);
			}
		}
	}
	for (int i = 0; i <= m; ++i)
		cout << f[m & 1][0][i] << ' ';
	cout << '\n';
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 0ms
memory: 5816kb

input:

10 9
3 5
3 10
4 7
4 8
5 6
5 9
6 9
7 9
9 10

output:

1 0 0 1 1 1 0 0 0 0 

result:

ok 10 numbers

Test #2:

score: 0
Accepted
time: 0ms
memory: 5648kb

input:

8 15
1 4
1 5
1 8
2 4
2 6
3 6
4 5
4 6
4 7
5 6
5 7
5 8
6 7
6 8
7 8

output:

1 0 0 10 18 26 46 54 43 30 18 8 2 0 0 0 

result:

ok 16 numbers

Test #3:

score: 0
Accepted
time: 362ms
memory: 210416kb

input:

19 19
1 12
1 16
1 18
2 8
2 17
3 11
3 17
4 9
4 19
5 17
7 13
8 17
9 13
9 15
9 17
10 16
10 18
14 17
15 16

output:

1 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 

result:

ok 20 numbers

Test #4:

score: 0
Accepted
time: 1ms
memory: 5604kb

input:

7 14
1 3
1 4
1 7
2 3
2 5
2 6
2 7
3 4
3 5
3 7
4 7
5 6
5 7
6 7

output:

1 0 0 11 16 18 46 64 47 30 18 5 0 0 0 

result:

ok 15 numbers

Test #5:

score: 0
Accepted
time: 1ms
memory: 5728kb

input:

10 9
1 9
2 6
3 5
3 8
3 10
4 6
4 8
5 6
7 10

output:

1 0 0 0 0 1 0 0 0 0 

result:

ok 10 numbers

Test #6:

score: 0
Accepted
time: 7ms
memory: 18156kb

input:

15 14
2 9
2 10
3 5
3 10
3 12
3 14
4 6
5 10
5 15
6 9
6 15
7 11
7 13
9 15

output:

1 0 0 2 0 1 3 1 0 0 0 0 0 0 0 

result:

ok 15 numbers

Test #7:

score: 0
Accepted
time: 1ms
memory: 5664kb

input:

9 8
1 3
2 4
2 7
3 5
3 9
4 6
7 9
8 9

output:

1 0 0 0 0 0 0 0 0 

result:

ok 9 numbers

Test #8:

score: 0
Accepted
time: 311ms
memory: 210448kb

input:

19 18
1 5
1 9
1 15
2 4
2 11
2 15
3 6
3 8
3 17
4 19
5 12
6 13
6 15
8 10
8 15
9 19
12 17
13 16

output:

1 0 0 0 1 0 1 2 0 0 1 2 0 0 0 0 0 0 0 

result:

ok 19 numbers

Test #9:

score: 0
Accepted
time: 1ms
memory: 5672kb

input:

7 18
1 2
1 3
1 4
1 6
1 7
2 3
2 5
2 6
2 7
3 4
3 5
3 7
4 5
4 6
4 7
5 6
5 7
6 7

output:

1 0 0 20 51 108 278 528 711 760 660 468 293 156 54 8 0 0 0 

result:

ok 19 numbers

Test #10:

score: 0
Accepted
time: 1ms
memory: 5816kb

input:

10 15
1 6
2 4
2 6
2 9
2 10
3 5
3 8
3 9
3 10
4 5
4 8
5 8
5 10
7 9
8 9

output:

1 0 0 4 6 12 16 12 9 4 0 0 0 0 0 0 

result:

ok 16 numbers

Subtask #2:

score: 15
Accepted

Dependency #1:

100%
Accepted

Test #11:

score: 15
Accepted
time: 1ms
memory: 5812kb

input:

10 22
1 2
1 3
1 4
1 6
1 8
1 9
2 3
2 4
2 5
2 7
2 8
2 10
3 8
3 10
4 7
4 8
5 7
5 10
6 10
7 9
8 10
9 10

output:

1 0 0 13 33 64 162 367 621 906 1216 1343 1215 988 682 353 146 58 20 4 0 0 0 

result:

ok 23 numbers

Test #12:

score: 0
Accepted
time: 4ms
memory: 6008kb

input:

11 38
1 2
1 3
1 4
1 6
1 7
1 8
1 10
2 5
2 8
2 9
2 10
2 11
3 5
3 6
3 7
3 9
3 10
3 11
4 5
4 7
4 11
5 6
5 7
5 9
5 10
5 11
6 7
6 8
6 9
6 10
6 11
7 8
7 9
7 10
8 9
8 11
9 11
10 11

output:

1 0 0 50 210 800 3661 14805 51947 164232 466335 1177265 2639525 5274024 9420013 15077609 21687685 28100640 32827271 34579721 32851761 28140784 21708463 15062239 9394113 5261128 2639589 1183171 472151 166600 51607 13987 3278 656 117 17 1 0 0 

result:

ok 39 numbers

Test #13:

score: 0
Accepted
time: 2ms
memory: 8096kb

input:

11 24
1 3
1 4
1 7
1 8
2 6
2 7
2 8
3 4
3 5
3 6
3 8
3 10
4 7
4 9
5 7
5 9
5 11
6 8
6 10
6 11
7 10
7 11
8 9
8 10

output:

1 0 0 9 26 65 147 343 709 1179 1783 2437 2715 2489 1993 1341 702 297 109 30 7 2 0 0 0 

result:

ok 25 numbers

Test #14:

score: 0
Accepted
time: 5ms
memory: 8152kb

input:

11 37
1 2
1 4
1 5
1 6
1 7
1 10
2 3
2 4
2 6
2 7
2 8
2 9
2 10
3 5
3 6
3 8
3 10
3 11
4 5
4 6
4 9
4 10
4 11
5 7
5 9
6 7
6 8
6 10
6 11
7 9
7 10
7 11
8 9
8 10
8 11
9 10
10 11

output:

1 0 0 46 189 675 2952 11644 39587 121171 335150 825420 1798517 3475223 5977332 9174036 12597741 15530759 17234898 17229504 15512559 12574521 9163776 5982788 3484905 1805833 829874 336708 120415 37965 10436 2476 518 93 14 2 0 0 

result:

ok 38 numbers

Test #15:

score: 0
Accepted
time: 483ms
memory: 210356kb

input:

19 24
1 9
1 10
1 17
1 19
2 3
3 6
4 8
4 10
4 13
4 14
5 7
7 11
8 13
8 17
9 12
9 16
10 19
11 15
11 17
12 16
13 15
14 15
14 17
14 19

output:

1 0 0 3 5 8 14 25 31 36 40 33 27 20 10 3 0 0 0 0 0 0 0 0 0 

result:

ok 25 numbers

Test #16:

score: 0
Accepted
time: 0ms
memory: 5804kb

input:

9 30
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
4 5
4 6
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 9
8 9

output:

1 0 0 48 175 568 2365 8050 22348 54852 117479 214858 338872 467840 567602 604996 567273 467832 338270 213748 117607 55912 22753 7882 2298 548 107 18 2 0 0 

result:

ok 31 numbers

Test #17:

score: 0
Accepted
time: 242ms
memory: 108048kb

input:

18 24
1 2
1 7
1 13
1 15
1 17
2 3
2 17
3 9
4 6
4 7
5 8
5 15
5 16
6 7
6 14
7 14
8 11
8 16
10 16
11 12
11 18
14 16
14 17
15 16

output:

1 0 0 5 3 4 14 15 16 21 21 16 8 3 1 0 0 0 0 0 0 0 0 0 0 

result:

ok 25 numbers

Test #18:

score: 0
Accepted
time: 6ms
memory: 9232kb

input:

13 27
1 2
1 5
1 7
1 10
1 11
1 12
2 3
2 4
2 12
3 4
3 11
3 12
4 5
4 7
4 12
4 13
5 9
5 10
5 11
7 8
7 9
7 11
7 12
8 11
9 13
10 12
11 13

output:

1 0 0 12 37 85 229 607 1265 2371 4146 6130 7924 9384 9660 8504 6605 4404 2430 1122 423 139 47 9 1 1 0 0 

result:

ok 28 numbers

Test #19:

score: 0
Accepted
time: 0ms
memory: 5676kb

input:

7 21
1 2
1 3
1 4
1 5
1 6
1 7
2 3
2 4
2 5
2 6
2 7
3 4
3 5
3 6
3 7
4 5
4 6
4 7
5 6
5 7
6 7

output:

1 0 0 35 105 252 805 1935 3255 4515 5481 5481 4515 3255 1935 805 252 105 35 0 0 1 

result:

ok 22 numbers

Test #20:

score: 0
Accepted
time: 365ms
memory: 108016kb

input:

18 32
1 4
1 7
1 12
1 16
1 17
1 18
2 3
2 4
2 6
2 8
2 9
2 10
2 17
2 18
3 9
3 15
3 18
4 11
4 12
4 15
4 16
5 17
6 10
6 15
6 17
7 8
9 16
9 18
10 11
11 12
11 16
14 17

output:

1 0 0 10 18 41 122 291 623 1198 2148 3576 5244 6798 8004 8546 8223 7176 5608 3798 2226 1153 498 163 49 18 4 0 0 0 0 0 0 

result:

ok 33 numbers

Test #21:

score: 0
Accepted
time: 88ms
memory: 55876kb

input:

17 21
1 5
1 9
1 12
2 3
2 9
2 11
2 12
2 13
2 15
3 13
4 5
4 9
4 11
4 13
5 8
5 15
7 8
7 9
8 10
8 15
12 13

output:

1 0 0 3 6 15 21 32 55 75 87 75 56 45 27 10 2 1 1 0 0 0 

result:

ok 22 numbers

Test #22:

score: 0
Accepted
time: 245ms
memory: 107956kb

input:

18 25
1 5
1 6
1 7
1 18
3 4
3 9
3 18
4 9
4 15
5 8
5 10
5 13
5 16
5 17
6 14
6 16
7 8
8 9
9 10
9 14
10 12
10 15
11 12
13 18
16 17

output:

1 0 0 2 5 2 17 21 25 49 57 68 59 68 67 37 22 9 3 0 0 0 0 0 0 0 

result:

ok 26 numbers

Test #23:

score: 0
Accepted
time: 3ms
memory: 5964kb

input:

11 31
1 2
1 6
1 7
1 8
1 10
1 11
2 3
2 4
2 7
2 8
3 5
3 6
3 10
3 11
4 5
4 6
4 7
4 8
4 10
5 6
5 8
5 9
5 10
6 10
6 11
7 8
7 10
7 11
8 9
8 11
9 10

output:

1 0 0 25 80 252 931 2947 8105 19882 43247 82492 137162 199904 257302 292622 293531 259948 203238 139705 83764 43252 18951 6991 2155 538 107 18 2 0 0 0 

result:

ok 32 numbers

Test #24:

score: 0
Accepted
time: 2ms
memory: 5972kb

input:

11 23
1 3
1 6
1 7
1 8
1 10
1 11
2 4
2 7
2 9
2 10
3 4
3 6
3 8
3 9
3 11
4 5
4 6
4 9
5 8
5 10
6 11
8 9
9 11

output:

1 0 0 10 22 49 126 253 455 770 1080 1267 1327 1146 774 475 272 114 36 11 3 1 0 0 

result:

ok 24 numbers

Test #25:

score: 0
Accepted
time: 4ms
memory: 8428kb

input:

12 26
1 2
1 4
1 5
1 6
1 8
1 9
1 11
1 12
2 3
2 6
2 8
2 10
2 12
3 10
3 11
3 12
4 6
4 7
4 9
5 9
5 10
6 7
6 8
6 11
7 10
8 9

output:

1 0 0 13 25 58 172 367 751 1471 2425 3509 4595 5207 4957 3973 2676 1501 699 266 80 19 3 0 0 0 0 

result:

ok 27 numbers

Test #26:

score: 0
Accepted
time: 47ms
memory: 18248kb

input:

15 36
1 3
1 6
2 5
2 11
2 14
2 15
3 6
3 7
3 9
3 11
3 12
3 13
4 10
4 11
4 14
5 6
5 9
5 10
5 11
5 12
5 15
6 13
6 14
7 8
7 12
7 13
7 15
8 9
8 13
8 14
10 14
11 13
12 13
12 14
12 15
13 14

output:

1 0 0 16 47 142 453 1358 3739 9187 20868 43655 82997 144331 229041 329775 431023 509806 542672 519878 448465 346692 239031 146924 80469 38975 16428 5939 1835 467 83 7 0 0 0 0 0 

result:

ok 37 numbers

Test #27:

score: 0
Accepted
time: 244ms
memory: 57928kb

input:

17 40
1 3
1 5
1 6
1 8
2 3
2 7
2 8
2 9
2 17
3 5
3 7
3 8
3 9
3 11
4 5
4 7
4 10
4 12
5 6
5 8
5 15
6 12
6 13
6 15
6 17
7 15
8 11
8 14
8 16
9 12
9 13
9 14
9 16
10 11
10 16
11 12
11 16
11 17
12 14
12 17

output:

1 0 0 15 35 114 403 1162 3281 8752 21580 49554 105445 207380 375007 621544 945721 1318606 1677800 1947770 2063989 1989450 1738049 1375770 984863 634460 367508 191810 89635 37264 13901 4628 1334 326 56 3 0 0 0 0 0 

result:

ok 41 numbers

Test #28:

score: 0
Accepted
time: 403ms
memory: 210448kb

input:

19 22
1 8
1 17
2 7
2 13
3 6
3 8
3 9
3 17
4 8
5 10
5 12
5 17
6 9
7 10
8 11
9 11
9 13
10 16
11 12
11 15
12 17
15 19

output:

1 0 0 2 2 4 6 6 7 7 7 7 5 5 3 1 1 0 0 0 0 0 0 

result:

ok 23 numbers

Test #29:

score: 0
Accepted
time: 549ms
memory: 107996kb

input:

18 37
1 3
1 12
2 14
3 4
3 8
3 11
3 14
3 16
4 12
5 6
5 7
5 17
6 7
6 8
6 12
6 14
6 18
7 8
7 9
7 12
7 14
8 15
8 18
9 13
9 18
10 12
10 15
11 17
12 13
12 14
13 14
13 16
13 18
14 17
15 16
16 18
17 18

output:

1 0 0 10 33 82 233 654 1551 3511 7445 14215 25024 40511 60096 82061 102886 118406 124842 120512 106865 86464 63433 42184 24919 12915 6033 2495 862 255 62 13 3 0 0 0 0 0 

result:

ok 38 numbers

Test #30:

score: 0
Accepted
time: 44ms
memory: 30692kb

input:

16 22
1 4
1 7
1 13
1 14
2 4
2 11
3 6
3 8
3 9
4 7
4 8
4 14
5 14
6 13
8 11
8 15
10 16
12 14
12 15
13 15
14 16
15 16

output:

1 0 0 2 3 6 7 13 18 15 14 14 15 10 3 3 3 1 0 0 0 0 0 

result:

ok 23 numbers

Subtask #3:

score: 0
Runtime Error

Test #31:

score: 0
Runtime Error

input:

25 45
1 6
1 12
1 17
2 3
2 4
2 6
3 6
3 8
4 5
4 12
4 16
5 17
6 21
7 14
7 22
7 23
8 15
8 19
8 24
9 11
9 19
9 23
9 25
10 17
10 18
11 16
11 19
11 22
12 19
13 18
14 19
15 19
16 24
17 19
17 22
17 25
18 19
18 21
18 24
19 23
20 22
21 25
22 23
23 25
24 25

output:


result:


Subtask #4:

score: 0
Wrong Answer

Dependency #2:

100%
Accepted

Test #51:

score: 0
Wrong Answer
time: 7ms
memory: 18244kb

input:

15 104
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
3 4
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
4 13
4 14
4 15
5 6
5 7
5 8
5 9
5 10
5 11
5 12
5 13
5 14
5 15
6 7
6 8
6 9
6 10
6 11
6...

output:

1 0 0 0 0 

result:

wrong answer 4th numbers differ - expected: '442', found: '0'

Subtask #5:

score: 0
Skipped

Dependency #4:

0%