CSES - Datatähti 2019 alku - Results
Submission details
Task:Ruudukko
Sender:jarvenp
Submission time:2018-10-05 16:15:40 +0300
Language:C++
Status:READY
Result:45
Feedback
groupverdictscore
#1ACCEPTED31
#2ACCEPTED14
#30
Test results
testverdicttimegroup
#1ACCEPTED0.03 s1details
#2ACCEPTED0.01 s1details
#3ACCEPTED0.01 s1details
#4ACCEPTED0.01 s1details
#5ACCEPTED0.01 s1details
#6ACCEPTED0.01 s1details
#7ACCEPTED0.03 s1details
#8ACCEPTED0.02 s1details
#9ACCEPTED0.03 s1details
#10ACCEPTED0.02 s1details
#11ACCEPTED0.02 s2details
#12ACCEPTED0.02 s2details
#13ACCEPTED0.01 s2details
#14ACCEPTED0.03 s2details
#15ACCEPTED0.02 s2details
#16ACCEPTED0.02 s2details
#17ACCEPTED0.02 s2details
#18ACCEPTED0.03 s2details
#19ACCEPTED0.03 s2details
#20ACCEPTED0.02 s2details
#21--3details
#22--3details
#23--3details
#24--3details
#25--3details
#26--3details
#27--3details
#28--3details
#29--3details
#30--3details

Code

#include <bits/stdc++.h>
#include <stdint.h>
using namespace std;


uint32_t n;
uint64_t counter;

const uint64_t M = 1e9+7;

void taulukot(uint32_t layer, char taul[][500], char goal[][500], uint16_t aUsed, uint16_t bUsed){
  if(layer == n){
    bool match = true;
    for(uint32_t i=0; i<n; i++){
      //  cout << taul[i]<<"\n";
      for(uint32_t i2=0; i2<n; i2++){
	if((taul[i][i2] != goal[i][i2]) && (goal[i][i2] != '.')){
	  match = false;
	  break;
	}
      }
      if(!match){
	break;
      }
    }
    if(match){
      counter++;
    }
    //   cout << "\n";
  }
  else{
    char temp[500][500];
    for(uint32_t i=0; i<n; i++){
      for(uint32_t i2=0; i2<n; i2++){
	temp[i][i2] = taul[i][i2];
      }
      temp[i][n] = 0;
    }
    for(uint32_t i=0; i<n; i++){
      //cout <<"b\n";
      if(((aUsed>>i)&1) == 0){
	//cout << "a\n";
	aUsed = aUsed | (1<<i);
	temp[layer][i] = 'A';
	for(uint32_t i2=0; i2<n; i2++){
	  if((((bUsed>>i2)&1) == 0) && (i2 != i)){
	    // cout << i<<" "<<temp[layer][i]<<"\n";
	    bUsed = bUsed | (1<<i2);
	    temp[layer][i2] = 'B';
	    taulukot(layer+1, temp, goal, aUsed, bUsed);
	    bUsed = bUsed & ~(1<<i2);
	    temp[layer][i2] = '.';
	  }
	}
	aUsed = aUsed & ~(1<<i);
	temp[layer][i] = '.';
      }
    }
  }
}

uint64_t fact(uint32_t val){
  uint64_t ans=1;
  for(uint32_t i=1; i<=val; i++){
    ans *= i;
    ans %=M;
  }
  return ans;
}

int main(){  
  cin >> n;
  char goal[500][500];
  bool empty = true;
  for(uint32_t i=0; i<n; i++){
    cin >> goal[i];
    if(empty){
      for(uint32_t i2=0; i2<n; i2++){
	if(goal[i][i2] != '.'){
	  empty = false;
	}
      }
    }
  }

  if(!empty){
    char taul[500][500];
    for(uint32_t i=0; i<n; i++){
      for(uint32_t i2=0; i2<n; i2++){
	taul[i][i2] = '.';
      }
      taul[i][n] = 0;
    }
    counter = 0;
    taulukot(0,taul,goal,0,0);
    cout << counter<<"\n";
  }
  else{
    uint32_t taikaluvut[501];
    taikaluvut[1] = 0;
    taikaluvut[2] = 1;
    for(uint32_t i=3; i<501; i++){
      taikaluvut[i] = (((taikaluvut[i-1]+taikaluvut[i-2])%M)*(i-1))%M;
    }
    cout << (fact(n)*(uint64_t)taikaluvut[n])%M<<"\n";
  }
}

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: ACCEPTED

input
2
B.
.A

correct output
0

user output
0

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: ACCEPTED

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

correct output
22

user output
22

Test 9

Group: 1

Verdict: ACCEPTED

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

correct output
2

user output
2

Test 10

Group: 1

Verdict: ACCEPTED

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

correct output
1

user output
1

Test 11

Group: 2

Verdict: ACCEPTED

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

correct output
306442892

user output
306442892

Test 12

Group: 2

Verdict: ACCEPTED

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

correct output
694861480

user output
694861480

Test 13

Group: 2

Verdict: ACCEPTED

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

correct output
555319110

user output
555319110

Test 14

Group: 2

Verdict: ACCEPTED

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

correct output
108372237

user output
108372237

Test 15

Group: 2

Verdict: ACCEPTED

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

correct output
259107857

user output
259107857

Test 16

Group: 2

Verdict: ACCEPTED

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

correct output
19906314

user output
19906314

Test 17

Group: 2

Verdict: ACCEPTED

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

correct output
224313667

user output
224313667

Test 18

Group: 2

Verdict: ACCEPTED

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

correct output
929574601

user output
929574601

Test 19

Group: 2

Verdict: ACCEPTED

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

correct output
600226043

user output
600226043

Test 20

Group: 2

Verdict: ACCEPTED

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

correct output
198353194

user output
198353194

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)