static long power ( long a , long n ) {
  if ( n == 0 ) {
    return 1 ;
  }
  long p = power ( a , n / 2 ) % mod ;
  p = ( p * p ) % mod ;
  if ( n == 1 ) {
    p = ( p * a ) % mod ;
  }
  return p ;
}

static long power ( long a , long n ) { if ( n == 0 ) { return 1 ; } long p = power ( a , n / 2 ) % mod ; p = ( p * p ) % mod ; if ( n == 1 ) { p = ( p * a ) % mod ; } return p ; }
(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 (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (return_statement (decimal_integer_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (identifier)))))) (return_statement (identifier))))