#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

long long func( string s ) {
    long long ret = 0;
    string S;
    bool ope = true;
    for ( int i = 0; i < s.length(); i++ ) {
        if ( isdigit(s[i]) ) {
            S += s[i];
        }
        else if ( s[i] == '+' || s[i] == '-' ) {
            if ( i == s.length()-1 ) { return LLONG_MAX; }
            if ( S.size() == 0 ) { return LLONG_MAX; }
            else {
                long long l = stoll(S);
                S.clear();
                ret += ope ? l : -l;
                ope = s[i] == '+';
            }
        }
        else {

        }
    }
    long long l = stoll(S);
    ret += ope ? l : -l;

    return ret;
}

int main() {
    
    string S;
    cin >> S;
    long long ans = LLONG_MIN;
    for ( int i = 0; i < S.length(); i++ ) {
        string s;
        for ( int j = 0; j < S.length(); j++ ) {
            s += S[(i+j)%S.length()];
        }
        long long l = func( s );
        if ( l == LLONG_MAX ) { continue; }
        ans = max( ans, l );
    }

    cout << ans << endl;

    return 0;
}