static long pow ( long a , long n ) {
  long ret = 1 ;
  for ( ;
  n > 0 ;
  n >>= 1 , a = a * a ) {
    if ( n % 2 == 1 ) {
      ret = ret * a ;
    }
  }
  return ret ;
}

static long pow ( long a , long n ) { long ret = 1 ; for ( ; n > 0 ; n >>= 1 , a = a * a ) { if ( n % 2 == 1 ) { ret = ret * a ; } } return ret ; }
(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))) (for_statement condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (assignment_expression left: (identifier) right: (decimal_integer_literal)) update: (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))))))) (return_statement (identifier))))