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

using uint = unsigned int;
using ll = long long;

#define CIN( LL , A ) LL A; cin >> A 
#define GETLINE( A ) string A; getline( cin , A ) 
#define GETLINE_SEPARATE( A , SEPARATOR ) string A; getline( cin , A , SEPARATOR ) 
#define FOR_LL( VAR , INITIAL , FINAL_PLUS_ONE ) for( ll VAR = INITIAL ; VAR < FINAL_PLUS_ONE ; VAR ++ ) 
#define FOR_ITR( ARRAY , ITR , END ) for( auto ITR = ARRAY .begin() , END = ARRAY .end() ; ITR != END ; ITR ++ ) 
#define REPEAT( HOW_MANY_TIMES ) FOR_LL( VARIABLE_FOR_REPEAT , 0 , HOW_MANY_TIMES ) 
#define RETURN( ANSWER ) cout << ( ANSWER ) << endl; return 0 
#define DOUBLE( PRECISION , ANSWER ) cout << fixed << setprecision( PRECISION ) << ( ANSWER ) << endl; return 0 
#define MIN( A , B ) A < B ? A : B;
#define MAX( A , B ) A < B ? B : A;
template <typename T> inline T Absolute( const T& a ){ return a > 0 ? a : - a; }

constexpr const ll P = 1000000007;

int main(){
  CIN( ll , L );
  CIN( ll , N );
  bool used[8] = {};
  FOR_LL( i , 0 , N ){
    CIN( string , Si );
    ll num = ( Si.substr( 0 , 1 ) == "B" ? 4 : 0 ) + ( Si.substr( 1 , 1 ) == "B" ? 2 : 0 ) + ( Si.substr( 2 , 1 ) == "B" ? 1 : 0 );
    used[ num ] = true;
  }
  ll count = 0;
  FOR_LL( num , 0 , 8 ){
    if( used[num] ){
      count++;
    }
  }
  L -= 3;
  while( L != 0 ){
    count *= 8;
    L -= 3;
  }
  RETURN( count );
}