public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  int n ;
  String s ;
  n = Integer . parseInt ( input . nextLine ( ) ) ;
  s = input . nextLine ( ) ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    if ( s . charAt ( i ) != '.' ) {
      if ( s . charAt ( i ) == 'R' ) {
        while ( s . charAt ( i ) == 'R' ) {
          ++ i ;
        }
        System . out . println ( i + " " + ( i + 1 ) ) ;
      }
      else {
        System . out . println ( ( i + 1 ) + " " + i ) ;
      }
      break ;
    }
  }
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; int n ; String s ; n = Integer . parseInt ( input . nextLine ( ) ) ; s = input . nextLine ( ) ; for ( int i = 0 ; i < n ; ++ i ) { if ( s . charAt ( i ) != ' . ' ) { if ( s . charAt ( i ) == ' R ' ) { while ( s . charAt ( i ) == ' R ' ) { ++ i ; } System . out . println ( i + " ▁ " + ( i + 1 ) ) ; } else { System . out . println ( ( i + 1 ) + " ▁ " + i ) ; } break ; } } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (block (while_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) body: (block (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (string_literal)) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (string_literal)) right: (identifier))))))) (break_statement)))))))