using System;
class Program {
    static void Main() {
        char[] cs = Console.ReadLine().ToCharArray();
        int len = cs.Length;
        int ans = -(int)Math.Pow(10, 11);
        for (int cut = 0; cut < len; cut++) {
            int score = 0, vol = 0, digit = 0;
            for (int i = len - 1; 0 <= i; i--) {
                char c = cs[(cut + i) % len];
                bool p = c == '+', m = c == '-';
                bool pm = p || m;
                if ((i == len - 1 || i == 0) && pm) goto exit;
                if (pm) {
                    if (p) score += vol;
                    else score -= vol;
                    vol = 0;
                    digit = 0;
                } else {
                    vol += (c - 48) * (int)Math.Pow(10, digit);
                    digit++;
                }
                if (i == 0) score += vol;
            }
            if (ans < score) ans = score;
            exit:;
        }
        Console.WriteLine(ans);
    }
}