#!/usr/bin/env perl

use strict;
use warnings;
use Data::Dumper;

my $s = <>; chomp $s;
my $n = length $s;
my @sa = split //, $s . $s;
my $ma = 0;
for (my $i = 0; $i < $n; $i++) {
  my @ea = @sa[$i..($i+$n-1)];
  my $es = "";
  my $leading0 = 1;
  for my $c (@ea) {#(my $k = 0; $k < @ea; $k++) {
    if ($c ne '0') { $leading0 = 0; }
    $es = $es . $c unless $leading0 && $c eq '0';
    if ($c eq '+' || $c eq '-') { $leading0 = 1; }
  }
  my $fi = substr $es, 0, 1;
  my $la = substr $es, -1;
  next if $fi eq '+' || $fi eq '-';
  next if $la eq '+' || $la eq '-';
  my $cand = eval $es;
  $ma = $cand if $ma < $cand;
}
print "$ma\n";