static long getSum ( long n , long k ) {
  long pwrK = sumPowersK ( n , k ) ;
  long sumAll = ( n * ( n + 1 ) ) / 2 ;
  return ( sumAll - pwrK ) ;
}

static long getSum ( long n , long k ) { long pwrK = sumPowersK ( n , k ) ; long sumAll = ( n * ( n + 1 ) ) / 2 ; return ( sumAll - pwrK ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))))) right: (decimal_integer_literal)))) (return_statement (parenthesized_expression (binary_expression left: (identifier) right: (identifier))))))