CSES - Datatähti 2019 alku - Results
Submission details
Task:Ruudukko
Sender:Ilmari2000
Submission time:2018-10-12 00:56:01 +0300
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1details
#2ACCEPTED0.02 s1details
#30.03 s1details
#4ACCEPTED0.01 s1details
#5ACCEPTED0.03 s1details
#6ACCEPTED0.02 s1details
#7ACCEPTED0.02 s1details
#80.01 s1details
#90.02 s1details
#100.01 s1details
#11ACCEPTED0.26 s2details
#12--2details
#13--2details
#14--2details
#15--2details
#16--2details
#17--2details
#18--2details
#19--2details
#20--2details
#21--3details
#22--3details
#23--3details
#24--3details
#25--3details
#26--3details
#27--3details
#28--3details
#29--3details
#30--3details

Code

#include <iostream>
#include <map>
#include <vector>

using namespace std;

int n, f;

long long int ret = 0;

map<int, int> must;

void tree(vector<bool> B, int row)
{
	for(int i = 0; i < n; i++)
	{
		if(i == row || B[i] || (must[row] && i != must[row]-1))
			continue;
		if(row == n-1)
		{
			ret++;
		}
		else
		{
			B[i] = true;
			tree(B, row+1);
			B[i] = false;
		}
	}
}

long long int facto(long long int n)
{
	if(n <= 1)
		return 1;
	return n * facto(n-1) % 1000000007;
}

int main()
{
	cin >> n;

	vector<bool> B;
	B.resize(n, false);
	f = n;

	string in;
	for(int i = 0; i < n; i++)
	{
		cin >> in;
		for(int j = 0; j < n; j++)
		{
			bool a = false;
			if(in[j] == 'A')
			{
				f--;
				a = true;
			}
			
			if(in[j] == 'B')
			{
				if(a)
					must[i] = j+1;
				else
					f--;
			}
			//if(in[i] == 'B')
			//	B[i] = true;
		}
	}

	tree(B, 0);

	cout << (ret * facto(f) % 1000000007l) << endl;
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
2
..
..

correct output
2

user output
2

Test 2

Group: 1

Verdict: ACCEPTED

input
2
..
A.

correct output
1

user output
1

Test 3

Group: 1

Verdict:

input
2
B.
.A

correct output
0

user output
1

Test 4

Group: 1

Verdict: ACCEPTED

input
3
...
...
...

correct output
12

user output
12

Test 5

Group: 1

Verdict: ACCEPTED

input
4
....
....
....
....

correct output
216

user output
216

Test 6

Group: 1

Verdict: ACCEPTED

input
5
.....
.....
.....
.....
...

correct output
5280

user output
5280

Test 7

Group: 1

Verdict: ACCEPTED

input
5
....A
.....
.....
.....
...

correct output
264

user output
264

Test 8

Group: 1

Verdict:

input
5
B....
.....
.....
.A.B.
...

correct output
22

user output
44

Test 9

Group: 1

Verdict:

input
5
B.A..
....A
.....
A.B..
...

correct output
2

user output
44

Test 10

Group: 1

Verdict:

input
5
A.B..
BA...
.B.A.
...BA
...

correct output
1

user output
44

Test 11

Group: 2

Verdict: ACCEPTED

input
10
..........
..........
..........
..........
...

correct output
306442892

user output
306442892

Test 12

Group: 2

Verdict:

input
50
.................................

correct output
694861480

user output
(empty)

Test 13

Group: 2

Verdict:

input
111
.................................

correct output
555319110

user output
(empty)

Test 14

Group: 2

Verdict:

input
222
.................................

correct output
108372237

user output
(empty)

Test 15

Group: 2

Verdict:

input
333
.................................

correct output
259107857

user output
(empty)

Test 16

Group: 2

Verdict:

input
444
.................................

correct output
19906314

user output
(empty)

Test 17

Group: 2

Verdict:

input
497
.................................

correct output
224313667

user output
(empty)

Test 18

Group: 2

Verdict:

input
498
.................................

correct output
929574601

user output
(empty)

Test 19

Group: 2

Verdict:

input
499
.................................

correct output
600226043

user output
(empty)

Test 20

Group: 2

Verdict:

input
500
.................................

correct output
198353194

user output
(empty)

Test 21

Group: 3

Verdict:

input
499
.................................

correct output
840243733

user output
(empty)

Test 22

Group: 3

Verdict:

input
499
........................A........

correct output
4146290

user output
(empty)

Test 23

Group: 3

Verdict:

input
499
B.........A......................

correct output
173518884

user output
(empty)

Test 24

Group: 3

Verdict:

input
499
...A....B........................

correct output
20044800

user output
(empty)

Test 25

Group: 3

Verdict:

input
499
AB...............................

correct output
2

user output
(empty)

Test 26

Group: 3

Verdict:

input
500
.................................

correct output
121064146

user output
(empty)

Test 27

Group: 3

Verdict:

input
500
.................................

correct output
848435259

user output
(empty)

Test 28

Group: 3

Verdict:

input
500
.....B........A..................

correct output
296240911

user output
(empty)

Test 29

Group: 3

Verdict:

input
500
.A......B........................

correct output
2196

user output
(empty)

Test 30

Group: 3

Verdict:

input
500
...AB............................

correct output
1

user output
(empty)