public static void main ( String [ ] args ) {
  Scanner scanner = new Scanner ( System . in ) ;
  String word1 = scanner . nextLine ( ) . trim ( ) ;
  String word2 = scanner . nextLine ( ) . trim ( ) ;
  StringBuilder sb = new StringBuilder ( ) ;
  for ( int i = 0 ;
  i < word1 . length ( ) ;
  i ++ ) {
    sb . append ( word1 . charAt ( i ) == word2 . charAt ( i ) ? "0" : "1" ) ;
  }
  System . out . println ( sb . toString ( ) ) ;
}

public static void main ( String [ ] args ) { Scanner scanner = new Scanner ( System . in ) ; String word1 = scanner . nextLine ( ) . trim ( ) ; String word2 = scanner . nextLine ( ) . trim ( ) ; StringBuilder sb = new StringBuilder ( ) ; for ( int i = 0 ; i < word1 . length ( ) ; i ++ ) { sb . append ( word1 . charAt ( i ) == word2 . charAt ( i ) ? "0" : "1" ) ; } System . out . println ( sb . toString ( ) ) ; }
(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: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (ternary_expression condition: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (string_literal) alternative: (string_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))