public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) , m = sc . nextInt ( ) , k = sc . nextInt ( ) ;
  int [ ] arr = new int [ m ] ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) arr [ i ] = sc . nextInt ( ) ;
  int mask = sc . nextInt ( ) ;
  int ans = 0 ;
  for ( int x : arr ) {
    int temp = x ^ mask ;
    int cnt = 0 ;
    for ( int i = 0 ;
    i < 21 ;
    i ++ ) {
      cnt += 1 & temp ;
      temp = temp >> 1 ;
    }
    if ( cnt <= k ) ans ++ ;
  }
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) , m = sc . nextInt ( ) , k = sc . nextInt ( ) ; int [ ] arr = new int [ m ] ; for ( int i = 0 ; i < m ; i ++ ) arr [ i ] = sc . nextInt ( ) ; int mask = sc . nextInt ( ) ; int ans = 0 ; for ( int x : arr ) { int temp = x ^ mask ; int cnt = 0 ; for ( int i = 0 ; i < 21 ; i ++ ) { cnt += 1 & temp ; temp = temp >> 1 ; } if ( cnt <= k ) ans ++ ; } System . out . println ( ans ) ; }
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