static int numOfIncSubseqOfSizeK ( int arr [ ] , int n , int k ) {
  int dp [ ] [ ] = new int [ k ] [ n ] , sum = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    dp [ 0 ] [ i ] = 1 ;
  }
  for ( int l = 1 ;
  l < k ;
  l ++ ) {
    for ( int i = l ;
    i < n ;
    i ++ ) {
      dp [ l ] [ i ] = 0 ;
      for ( int j = l - 1 ;
      j < i ;
      j ++ ) {
        if ( arr [ j ] < arr [ i ] ) {
          dp [ l ] [ i ] += dp [ l - 1 ] [ j ] ;
        }
      }
    }
  }
  for ( int i = k - 1 ;
  i < n ;
  i ++ ) {
    sum += dp [ k - 1 ] [ i ] ;
  }
  return sum ;
}

static int numOfIncSubseqOfSizeK ( int arr [ ] , int n , int k ) { int dp [ ] [ ] = new int [ k ] [ n ] , sum = 0 ; for ( int i = 0 ; i < n ; i ++ ) { dp [ 0 ] [ i ] = 1 ; } for ( int l = 1 ; l < k ; l ++ ) { for ( int i = l ; i < n ; i ++ ) { dp [ l ] [ i ] = 0 ; for ( int j = l - 1 ; j < i ; j ++ ) { if ( arr [ j ] < arr [ i ] ) { dp [ l ] [ i ] += dp [ l - 1 ] [ j ] ; } } } } for ( int i = k - 1 ; i < n ; i ++ ) { sum += dp [ k - 1 ] [ i ] ; } return sum ; }
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