public static void main ( String [ ] args ) {
  Scanner scan = new Scanner ( System . in ) ;
  String a = scan . next ( ) ;
  String b = scan . next ( ) ;
  int max = 0 ;
  for ( char c : ( a + b ) . toCharArray ( ) ) {
    max = Math . max ( c - '0' , max ) ;
  }
  int len = Integer . toString ( Integer . parseInt ( a , max + 1 ) + Integer . parseInt ( b , max + 1 ) , max + 1 ) . length ( ) ;
  System . out . println ( len ) ;
}

public static void main ( String [ ] args ) { Scanner scan = new Scanner ( System . in ) ; String a = scan . next ( ) ; String b = scan . next ( ) ; int max = 0 ; for ( char c : ( a + b ) . toCharArray ( ) ) { max = Math . max ( c - '0' , max ) ; } int len = Integer . toString ( Integer . parseInt ( a , max + 1 ) + Integer . parseInt ( b , max + 1 ) , max + 1 ) . length ( ) ; System . out . println ( len ) ; }
(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: (decimal_integer_literal))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (method_invocation object: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) name: (identifier) arguments: (argument_list)) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (character_literal)) (identifier))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal))))) (binary_expression left: (identifier) right: (decimal_integer_literal)))) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))