public static void main ( String [ ] args ) {
  Scanner cin = new Scanner ( new BufferedInputStream ( System . in ) ) ;
  int a = cin . nextInt ( ) ;
  int b = cin . nextInt ( ) ;
  int n = a , m = b ;
  int maxx = 0 ;
  while ( a != 0 ) {
    maxx = Math . max ( maxx , a % 10 ) ;
    a /= 10 ;
  }
  while ( b != 0 ) {
    maxx = Math . max ( maxx , b % 10 ) ;
    b /= 10 ;
  };
}

public static void main ( String [ ] args ) { Scanner cin = new Scanner ( new BufferedInputStream ( System . in ) ) ; int a = cin . nextInt ( ) ; int b = cin . nextInt ( ) ; int n = a , m = b ; int maxx = 0 ; while ( a != 0 ) { maxx = Math . max ( maxx , a % 10 ) ; a /= 10 ; } while ( b != 0 ) { maxx = Math . max ( maxx , b % 10 ) ; b /= 10 ; } ; }
(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 (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) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) 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: (identifier)) declarator: (variable_declarator name: (identifier) value: (identifier))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))))))