CSES - Datatähti 2019 alku

CSES - Datatähti 2019 alku - Results

Submission details
Task:	Ruudukko
Sender:	jarvenp
Submission time:	2019-01-07 17:24:17 +0200
Language:	C++
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	31
#2	ACCEPTED	14
#3	ACCEPTED	55

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	1	details
#2	ACCEPTED	0.01 s	1	details
#3	ACCEPTED	0.01 s	1	details
#4	ACCEPTED	0.03 s	1	details
#5	ACCEPTED	0.02 s	1	details
#6	ACCEPTED	0.02 s	1	details
#7	ACCEPTED	0.02 s	1	details
#8	ACCEPTED	0.01 s	1	details
#9	ACCEPTED	0.03 s	1	details
#10	ACCEPTED	0.02 s	1	details
#11	ACCEPTED	0.03 s	2	details
#12	ACCEPTED	0.01 s	2	details
#13	ACCEPTED	0.03 s	2	details
#14	ACCEPTED	0.07 s	2	details
#15	ACCEPTED	0.21 s	2	details
#16	ACCEPTED	0.41 s	2	details
#17	ACCEPTED	0.55 s	2	details
#18	ACCEPTED	0.57 s	2	details
#19	ACCEPTED	0.56 s	2	details
#20	ACCEPTED	0.57 s	2	details
#21	ACCEPTED	0.74 s	3	details
#22	ACCEPTED	0.03 s	3	details
#23	ACCEPTED	0.02 s	3	details
#24	ACCEPTED	0.02 s	3	details
#25	ACCEPTED	0.04 s	3	details
#26	ACCEPTED	0.48 s	3	details
#27	ACCEPTED	0.03 s	3	details
#28	ACCEPTED	0.03 s	3	details
#29	ACCEPTED	0.03 s	3	details
#30	ACCEPTED	0.03 s	3	details

Code

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


int64_t n;
int64_t taikaluvut[501];

const int64_t M = (1e9+7);

int64_t fact(int64_t val){
  int64_t ans=1;
  for(int64_t i=1; i<=val; i++){
    ans *= i;
    ans %=M;
  }
  return ans;
}

int64_t potenssi(int64_t a, int64_t b){
  if(b == 1){
    return a;
  }
  int64_t v = potenssi(a,b/2);
  v*=v;
  v %= M;
  if(b%2 == 1){
    v *= a;
    v %= M;
  }
  return v;
}

int64_t modulo(int64_t a, int64_t b){
  return ((a%M)*potenssi(b,M-2))%M;
}

int64_t factDiv(int64_t val1, int64_t val2, int64_t val3){
  /*if(val2 < val3){
    int64_t temp = val3;
    val3 = val2;
    val2 = temp;
  }
  int64_t factors[501];
  for(int64_t i=0; i<501; i++){
    factors[i] = 0;
  }
  factors[1] = 1;
  for(int64_t i=val2+1; i<=val1; i++){
    for(int64_t i2=0; primes[i][i2] != -1; i2++){
      factors[primes[i][i2]]++;
    }
  }
  for(int64_t i=2; i<=val3; i++){
    for(int64_t i2=0; primes[i][i2] != -1; i2++){
      factors[primes[i][i2]]--;
    }
  }
  int64_t ans = 1;
  for(int64_t i=1; i<=val1; i++){
    for(int64_t i2=0; i2<factors[i]; i2++){
      ans*= i;
      ans %= M;
    }
  }
  return ans;*/
  return modulo(fact(val1),(fact(val2)*fact(val3))%M);
}

int64_t perm(int64_t howMany, int64_t size){
  if(howMany > size){
    return 0;
  }
  //return((fact(size)/(fact(howMany)*fact(size-howMany)))%M);
  return (factDiv(size, howMany, (size-howMany)));
}

int64_t solutions(int64_t size, int64_t blocks){
  if(size < blocks){
    return 0;
  }
  int64_t ans = (int64_t)taikaluvut[size];
  for(int64_t i=1; i <= (size-blocks); i++){
    ans += (int64_t)(perm(i,(size-blocks))*(int64_t)taikaluvut[size-i])%M;
    ans %= M;
  }
  return ans;
}

int main(){
  /*  for(int64_t i=1; i<501; i++){
    int64_t num = i;
     int64_t index = 0;
       for(int64_t i2=2; num > 1; i2++){    
      while(num%i2 == 0){
	num/= i2;
	primes[i][index] = i2;
	index++;
      }
    }
    primes[i][index] = -1;
  }
  primes[1][0] = 1;
  primes[1][1] = -1;*/
     taikaluvut[0] = 1;
  taikaluvut[1] = 0;
  taikaluvut[2] = 1;
  for(int64_t i=3; i<501; i++){
    taikaluvut[i] = (((taikaluvut[i-1]+taikaluvut[i-2])%M)*(i-1))%M;
  }
  cin >> n;
  char goal[505][505];
    for(int64_t i=0; i<n; i++){
    cin >> goal[i];
    }  
  int64_t aAmount = 0;
  for(int64_t i=0; i<n; i++){
    for(int64_t i2=0; i2<n; i2++){
      if(goal[i][i2] == 'A'){
	aAmount++;
      }
    }
  }/*
  int64_t bAmount = 0;
  for(int64_t i=0; i<n; i++){
    for(int64_t i2=0; i2<n; i2++){
      if(goal[i][i2] == 'B'){
	bAmount++;
      }
      }
      }*/
  int64_t xSize = n-aAmount;
  int64_t ySize = n-aAmount;
  int64_t aSize = n-aAmount;
  int64_t extraB = 0;
  int64_t taulSize = n;
  for(int64_t i=0; i<n; i++){
    for(int64_t i2=0; i2<n; i2++){
      if(goal[i][i2] == 'B'){
        int64_t aX = 0;
        int64_t aY = 0;
	for(int64_t i3=0; i3<n; i3++){
	  if(goal[i][i3] == 'A'){
	    aX = 1;
	    goal[i][i3] = 'C';
	    break;
	  }
	  else if(goal[i][i3] == 'C'){
	    aX = 2;
	    break;
	  }
	}
	for(int64_t i3=0; i3<n; i3++){
	  if(goal[i3][i2] == 'A'){
	    aY = 1;
	    goal[i3][i2] = 'C';
	    break;
	  }
	  else if(goal[i3][i2] == 'C'){
	    aY = 2;
	    break;
	  }
	}
	taulSize--;
        if((aY==0) && (aX==0)){
	  xSize--;
	  ySize--;
	  extraB++;
	}
	else if((aY!=0)&&(aX!=0)){
	  if(aY == 1){
	    aAmount--;
	  }
	  if(aX == 1){
	    aAmount--;
	  }
	}
	else if(aY == 1){
	  aAmount--;
	  xSize--;
	}
	else if(aY == 2){
	  xSize--;
	}
	else if(aX==1){
	  aAmount--;
	  ySize--;
	}
	else if(aX == 2){
	  ySize--;
	}
      }
    }
  }
  //   cout << aAmount<<" "<< xSize<<" " << ySize<<" "<<aSize<<" "<<extraB<<" "<<taulSize<<"\n";
  if(xSize < ySize){
    int64_t temp = xSize;
    xSize = ySize;
    ySize = temp;
  }
  int64_t ans=0;
  for(int64_t i=0; i <= ySize; i++){
    // uint64_t b = ((fact(ySize)/fact(ySize-i))*perm(i,xSize))%M;
    int64_t b = (factDiv(ySize,(ySize-i),1)*perm(i,xSize))%M;
    // cout <<b <<"\n";
    int64_t tempY = ySize-i;
    int64_t tempX = xSize-i;
    int64_t temp = 0;
    for(int64_t i2=0; (i2 <= tempX)&&(i2 <= aAmount); i2++){
      if((taulSize-ySize-(aAmount-i2)) >= tempX){
        int64_t temp1 = (((perm(i2, aAmount)*(perm(tempX-i2,taulSize-ySize-aAmount)))%M)*fact(tempX))%M;
	for(int64_t i3=0; (i3 <= tempY)&& (i3 <= (aAmount-i2)); i3++){
	  if((taulSize-xSize-(aAmount-i2-i3)) >= tempY){
	    int64_t temp2 = (((perm(i3,aAmount-i2)*(perm(tempY-i3,taulSize-xSize-(aAmount-i2))))%M)*fact(tempY))%M;
	    temp += ((((temp1*temp2)%M)*solutions(taulSize-i-tempX-tempY, aAmount-i2-i3))%M);
	    temp %= M;
	  }
	}
      }
    }
    // cout <<i<<" "<<b<<" "<< temp<<"\n";
    ans += ((((b*temp)%M)*solutions(aSize, i+extraB))%M);
    ans %= M;
  }
  cout <<ans<<"\n";
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
`2 .. ..` view save

correct output
`2` view save

user output
`2` view save

Test 2

Group: 1

Verdict: ACCEPTED

input
`2 .. A.` view save

correct output
`1` view save

user output
`1` view save

Test 3

Group: 1

Verdict: ACCEPTED

input
`2 B. .A` view save

correct output
`0` view save

user output
`0` view save

Test 4

Group: 1

Verdict: ACCEPTED

input
`3 ... ... ...` view save

correct output
`12` view save

user output
`12` view save

Test 5

Group: 1

Verdict: ACCEPTED

input
`4 .... .... .... ....` view save

correct output
`216` view save

user output
`216` view save

Test 6

Group: 1

Verdict: ACCEPTED

input
`5 ..... ..... ..... ..... ...` view save

correct output
`5280` view save

user output
`5280` view save

Test 7

Group: 1

Verdict: ACCEPTED

input
`5 ....A ..... ..... ..... ...` view save

correct output
`264` view save

user output
`264` view save

Test 8

Group: 1

Verdict: ACCEPTED

input
`5 B.... ..... ..... .A.B. ...` view save

correct output
`22` view save

user output
`22` view save

Test 9

Group: 1

Verdict: ACCEPTED

input
`5 B.A.. ....A ..... A.B.. ...` view save

correct output
`2` view save

user output
`2` view save

Test 10

Group: 1

Verdict: ACCEPTED

input
`5 A.B.. BA... .B.A. ...BA ...` view save

correct output
`1` view save

user output
`1` view save

Test 11

Group: 2

Verdict: ACCEPTED

input
`10 .......... .......... .......... .......... ...` view save

correct output
`306442892` view save

user output
`306442892` view save

Test 12

Group: 2

Verdict: ACCEPTED

input
`50 .................................` view save

correct output
`694861480` view save

user output
`694861480` view save

Test 13

Group: 2

Verdict: ACCEPTED

input
`111 .................................` view save

correct output
`555319110` view save

user output
`555319110` view save

Test 14

Group: 2

Verdict: ACCEPTED

input
`222 .................................` view save

correct output
`108372237` view save

user output
`108372237` view save

Test 15

Group: 2

Verdict: ACCEPTED

input
`333 .................................` view save

correct output
`259107857` view save

user output
`259107857` view save

Test 16

Group: 2

Verdict: ACCEPTED

input
`444 .................................` view save

correct output
`19906314` view save

user output
`19906314` view save

Test 17

Group: 2

Verdict: ACCEPTED

input
`497 .................................` view save

correct output
`224313667` view save

user output
`224313667` view save

Test 18

Group: 2

Verdict: ACCEPTED

input
`498 .................................` view save

correct output
`929574601` view save

user output
`929574601` view save

Test 19

Group: 2

Verdict: ACCEPTED

input
`499 .................................` view save

correct output
`600226043` view save

user output
`600226043` view save

Test 20

Group: 2

Verdict: ACCEPTED

input
`500 .................................` view save

correct output
`198353194` view save

user output
`198353194` view save

Test 21

Group: 3

Verdict: ACCEPTED

input
`499 .................................` view save

correct output
`840243733` view save

user output
`840243733` view save

Test 22

Group: 3

Verdict: ACCEPTED

input
`499 ........................A........` view save

correct output
`4146290` view save

user output
`4146290` view save

Test 23

Group: 3

Verdict: ACCEPTED

input
`499 B.........A......................` view save

correct output
`173518884` view save

user output
`173518884` view save

Test 24

Group: 3

Verdict: ACCEPTED

input
`499 ...A....B........................` view save

correct output
`20044800` view save

user output
`20044800` view save

Test 25

Group: 3

Verdict: ACCEPTED

input
`499 AB...............................` view save

correct output
`2` view save

user output
`2` view save

Test 26

Group: 3

Verdict: ACCEPTED

input
`500 .................................` view save

correct output
`121064146` view save

user output
`121064146` view save

Test 27

Group: 3

Verdict: ACCEPTED

input
`500 .................................` view save

correct output
`848435259` view save

user output
`848435259` view save

Test 28

Group: 3

Verdict: ACCEPTED

input
`500 .....B........A..................` view save

correct output
`296240911` view save

user output
`296240911` view save

Test 29

Group: 3

Verdict: ACCEPTED

input
`500 .A......B........................` view save

correct output
`2196` view save

user output
`2196` view save

Test 30

Group: 3

Verdict: ACCEPTED

input
`500 ...AB............................` view save

correct output
`1` view save

user output
`1` view save

Datatähti 2019 alku

Ruudukko

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Tasks

Submissions (jarvenp)