#!/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 = -9999999999;

sub is_op {
  my $ch = shift;
  $ch eq '+' || $ch eq '-';
}

for (my $i = 0; $i < $n; $i++) {
  my @ea = @sa[$i..($i+$n-1)];
  next if is_op($ea[0]) || is_op($ea[@ea-1]);
  my @nea;
  my $ldz = 1;
  for my $c (@ea) {
    $ldz = 0 if $c ne '0';
    push @nea, $c unless $ldz;
    $ldz = 1 if is_op $c;
  }
  unshift @nea, '0' if is_op $nea[0];
  push @nea, '0' if is_op $nea[@nea-1];
  my @nnea;
  for (my $i = 0; $i < @nea; $i++) {
    push @nnea, $nea[$i];
    if ($i > 0 && is_op($nnea[$i - 1]) && is_op($nnea[$i])) {
      my $la = pop @nnea;
      push @nnea, '0';
      push @nnea, $la;
    }
  }
  my $cand = eval(join('', @nnea));
  $ma = $cand if $ma < $cand;
}
print "$ma\n";