public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int h = sc . nextInt ( ) ;
  int w = sc . nextInt ( ) ;
  int k1 = sc . nextInt ( ) ;
  long [ ] [ ] dp = new long [ h + 1 ] [ w ] ;
  long mod = 1000000007 ;
  dp [ 0 ] [ 0 ] = 1 ;
  for ( int i = 1 ;
  i <= h ;
  i ++ ) {
    for ( int j = w - 1 ;
    j >= 0 ;
    j -- ) {
      for ( int k = 0 ;
      k < Math . pow ( 2 , w - 1 ) ;
      k ++ ) {
        boolean a = false ;
        boolean b = false ;
        boolean jud = false ;
        int count = 0 ;
        int y = k ;
        while ( y > 0 ) {
          if ( ( y & 1 ) == 1 ) {
            if ( jud ) {
              break ;
            }
            if ( w - 1 - count == j ) {
              a = true ;
            }
            else if ( w - 1 - count == j + 1 ) {
              b = true ;
            }
            jud = true ;
          }
          else {
            jud = false ;
          }
          count ++ ;
          y >>= 1 ;
          if ( y <= 0 ) {
            jud = false ;
          }
        }
        if ( jud ) {
          continue ;
        }
        if ( j > 0 && a ) {
          dp [ i ] [ j ] += dp [ i - 1 ] [ j - 1 ] ;
        }
        else if ( j < w - 1 && b ) {
          dp [ i ] [ j ] += dp [ i - 1 ] [ j + 1 ] ;
        }
        else {
          dp [ i ] [ j ] += dp [ i - 1 ] [ j ] ;
        }
        dp [ i ] [ j ] %= mod ;
      }
    }
  }
  System . out . println ( dp [ h ] [ k1 - 1 ] ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int h = sc . nextInt ( ) ; int w = sc . nextInt ( ) ; int k1 = sc . nextInt ( ) ; long [ ] [ ] dp = new long [ h + 1 ] [ w ] ; long mod = 1000000007 ; dp [ 0 ] [ 0 ] = 1 ; for ( int i = 1 ; i <= h ; i ++ ) { for ( int j = w - 1 ; j >= 0 ; j -- ) { for ( int k = 0 ; k < Math . pow ( 2 , w - 1 ) ; k ++ ) { boolean a = false ; boolean b = false ; boolean jud = false ; int count = 0 ; int y = k ; while ( y > 0 ) { if ( ( y & 1 ) == 1 ) { if ( jud ) { break ; } if ( w - 1 - count == j ) { a = true ; } else if ( w - 1 - count == j + 1 ) { b = true ; } jud = true ; } else { jud = false ; } count ++ ; y >>= 1 ; if ( y <= 0 ) { jud = false ; } } if ( jud ) { continue ; } if ( j > 0 && a ) { dp [ i ] [ j ] += dp [ i - 1 ] [ j - 1 ] ; } else if ( j < w - 1 && b ) { dp [ i ] [ j ] += dp [ i - 1 ] [ j + 1 ] ; } else { dp [ i ] [ j ] += dp [ i - 1 ] [ j ] ; } dp [ i ] [ j ] %= mod ; } } } System . out . println ( dp [ h ] [ k1 - 1 ] ) ; }
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