CSES - Datatähti 2019 alku - Results
Submission details
Task:Ruudukko
Sender:kaurip
Submission time:2018-10-14 20:45:53 +0300
Language:Python3
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.05 s1details
#20.05 s1details
#3ACCEPTED0.04 s1details
#40.05 s1details
#50.05 s1details
#60.04 s1details
#70.04 s1details
#80.04 s1details
#90.04 s1details
#100.05 s1details
#110.05 s2details
#120.04 s2details
#130.04 s2details
#140.05 s2details
#150.04 s2details
#160.04 s2details
#170.06 s2details
#180.04 s2details
#190.05 s2details
#200.05 s2details
#210.04 s3details
#220.05 s3details
#230.05 s3details
#240.05 s3details
#250.04 s3details
#260.05 s3details
#270.05 s3details
#280.05 s3details
#290.05 s3details
#300.05 s3details

Code

from math import factorial

def derange(num):
    if num == 0 or num == 1:
        return 1-num
    return num*(derange(num-1))+(-1)**num

def bways(numn,numb):
    mult = 1
    for i in range(numn-numb,numn+1):
        mult *= i
    return derange(numn-numb)*mult

n=int(input())

matchesa = 0
matchesb = 0

for x in range(0,n):
    # grid.append(list(input()))
    row = input()
    matchesa += row.count("A")
    matchesb += row.count("B")

# count = int(factorial(n)*factorial(n)*dfactorial(n-1)/dfactorial(n))
# count = factorial(n)**2*consmult(n*n-2*n, n)/consmult(n*n-n, n)
# count = factorial(n)*(factorial(n)-(1-(1/n+(n-2)/n*(n-2)/(n-1)))*n)
# count = factorial(n)*n/(n-1)
# count = factorial(n)**2*((n-1)/n)**n
# count = factorial(n)**2*factorial(n)/(n**(n))
# count = int(factorial(n-matchesa)*derange(n-matchesb))%1000000007
count = int(factorial(n-matchesa)*bways(n,matchesb))%1000000007
print(count)

Test details

Test 1

Group: 1

Verdict:

input
2
..
..

correct output
2

user output
4

Test 2

Group: 1

Verdict:

input
2
..
A.

correct output
1

user output
2

Test 3

Group: 1

Verdict: ACCEPTED

input
2
B.
.A

correct output
0

user output
0

Test 4

Group: 1

Verdict:

input
3
...
...
...

correct output
12

user output
36

Test 5

Group: 1

Verdict:

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

correct output
216

user output
864

Test 6

Group: 1

Verdict:

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

correct output
5280

user output
26400

Test 7

Group: 1

Verdict:

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

correct output
264

user output
1320

Test 8

Group: 1

Verdict:

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

correct output
22

user output
2880

Test 9

Group: 1

Verdict:

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

correct output
2

user output
240

Test 10

Group: 1

Verdict:

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

correct output
1

user output
0

Test 11

Group: 2

Verdict:

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

correct output
306442892

user output
64428899

Test 12

Group: 2

Verdict:

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

correct output
694861480

user output
743073762

Test 13

Group: 2

Verdict:

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

correct output
555319110

user output
640420783

Test 14

Group: 2

Verdict:

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

correct output
108372237

user output
58636446

Test 15

Group: 2

Verdict:

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

correct output
259107857

user output
282915779

Test 16

Group: 2

Verdict:

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

correct output
19906314

user output
838403360

Test 17

Group: 2

Verdict:

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

correct output
224313667

user output
483891722

Test 18

Group: 2

Verdict:

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

correct output
929574601

user output
928148064

Test 19

Group: 2

Verdict:

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

correct output
600226043

user output
512793364

Test 20

Group: 2

Verdict:

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

correct output
198353194

user output
176596307

Test 21

Group: 3

Verdict:

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

correct output
840243733

user output
284709766

Test 22

Group: 3

Verdict:

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

correct output
4146290

user output
767508782

Test 23

Group: 3

Verdict:

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

correct output
173518884

user output
806337579

Test 24

Group: 3

Verdict:

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

correct output
20044800

user output
30692535

Test 25

Group: 3

Verdict:

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

correct output
2

user output
0

Test 26

Group: 3

Verdict:

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

correct output
121064146

user output
982833985

Test 27

Group: 3

Verdict:

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

correct output
848435259

user output
311541796

Test 28

Group: 3

Verdict:

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

correct output
296240911

user output
913210457

Test 29

Group: 3

Verdict:

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

correct output
2196

user output
957645879

Test 30

Group: 3

Verdict:

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

correct output
1

user output
0