static int binomialCoeff ( int n , int k ) {
  int [ ] C = new int [ k + 1 ] ;
  C [ 0 ] = 1 ;
  for ( int i = 1 ;
  i <= n ;
  i ++ ) {
    for ( int j = Math . min ( i , k ) ;
    j > 0 ;
    j -- ) C [ j ] = C [ j ] + C [ j - 1 ] ;
  }
  return C [ k ] ;
}

static int binomialCoeff ( int n , int k ) { int [ ] C = new int [ k + 1 ] ; C [ 0 ] = 1 ; for ( int i = 1 ; i <= n ; i ++ ) { for ( int j = Math . min ( i , k ) ; j > 0 ; j -- ) C [ j ] = C [ j ] + C [ j - 1 ] ; } return C [ k ] ; }
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