#!/usr/bin/env perl

# 正解していないコードですよ

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

my $s = <>; chomp $s;
my $n = length $s;
my @sa = split //, $s . $s;
my $ma = 0;

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