public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  h = sc . nextInt ( ) ;
  j = sc . nextInt ( ) ;
  r = new boolean [ 2 ] [ h ] ;
  for ( int i = 0 ;
  i < 2 ;
  i ++ ) {
    String s = sc . next ( ) ;
    for ( int j = 0 ;
    j < h ;
    j ++ ) {
      if ( s . charAt ( j ) == 'X' ) r [ i ] [ j ] = false ;
      else r [ i ] [ j ] = true ;
    }
  };
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; h = sc . nextInt ( ) ; j = sc . nextInt ( ) ; r = new boolean [ 2 ] [ h ] ; for ( int i = 0 ; i < 2 ; i ++ ) { String s = sc . next ( ) ; for ( int j = 0 ; j < h ; j ++ ) { if ( s . charAt ( j ) == ' X ' ) r [ i ] [ j ] = false ; else r [ i ] [ j ] = true ; } } ; }
(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)))))) (expression_statement (assignment_expression left: (identifier) right: (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)))) (expression_statement (assignment_expression left: (identifier) right: (array_creation_expression type: (boolean_type) dimensions: (dimensions_expr (decimal_integer_literal)) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (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: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (false))) alternative: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (true))))))))))