static int query ( int L , int R ) {
  return prefix [ R ] - prefix [ L - 1 ] ;
}

static int query ( int L , int R ) { return prefix [ R ] - prefix [ L - 1 ] ; }
(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 (return_statement (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))))