public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  String n = in . next ( ) ;
  String m = in . next ( ) ;
  int base = max ( n . chars ( ) . max ( ) . getAsInt ( ) , m . chars ( ) . max ( ) . getAsInt ( ) ) - '0' + 1 ;
  System . out . println ( new BigInteger ( n , base ) . add ( new BigInteger ( m , base ) ) . toString ( base ) . length ( ) ) ;
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; String n = in . next ( ) ; String m = in . next ( ) ; int base = max ( n . chars ( ) . max ( ) . getAsInt ( ) , m . chars ( ) . max ( ) . getAsInt ( ) ) - '0' + 1 ; System . out . println ( new BigInteger ( n , base ) . add ( new BigInteger ( m , base ) ) . toString ( base ) . length ( ) ) ; }
(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: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (method_invocation object: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)) (method_invocation object: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list)))) right: (character_literal)) right: (decimal_integer_literal)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (method_invocation object: (method_invocation object: (object_creation_expression type: (type_identifier) arguments: (argument_list (identifier) (identifier))) name: (identifier) arguments: (argument_list (object_creation_expression type: (type_identifier) arguments: (argument_list (identifier) (identifier))))) name: (identifier) arguments: (argument_list (identifier))) name: (identifier) arguments: (argument_list)))))))