static long sumPowersK ( long n , long k ) {
  long sum = 0 , num = 1 ;
  while ( num <= n ) {
    sum += num ;
    num *= k ;
  }
  return sum ;
}

static long sumPowersK ( long n , long k ) { long sum = 0 , num = 1 ; while ( num <= n ) { sum += num ; num *= k ; } return sum ; }
(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: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) body: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier))))) (return_statement (identifier))))