static int countSol ( int coeff [ ] , int n , int rhs ) {
  int dp [ ] = new int [ rhs + 1 ] ;
  Arrays . fill ( dp , 0 ) ;
  dp [ 0 ] = 1 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) for ( int j = coeff [ i ] ;
  j <= rhs ;
  j ++ ) dp [ j ] += dp [ j - coeff [ i ] ] ;
  return dp [ rhs ] ;
}

static int countSol ( int coeff [ ] , int n , int rhs ) { int dp [ ] = new int [ rhs + 1 ] ; Arrays . fill ( dp , 0 ) ; dp [ 0 ] = 1 ; for ( int i = 0 ; i < n ; i ++ ) for ( int j = coeff [ i ] ; j <= rhs ; j ++ ) dp [ j ] += dp [ j - coeff [ i ] ] ; return dp [ rhs ] ; }
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