#include<iostream>
#include<string>
#include<cstdio>

using namespace std;

long long calc(string s){
	if (s[0] == '-' || s[0] == '+' || s[s.size() - 1] == '-' || s[s.size() - 1] == '+') return -10000000000;
	for (int i = 0; i < s.size() - 1; i++){
		if (s[i] == '+' || s[i] == '-'){
			if (s[i + 1] == '+' || s[i + 1] == '-') return -10000000000;
		}
	}

	string c="";
	int i;
	for (i = 0;; i++){
		if (s[i] == '+' || s[i] == '-') break;
		else c += s[i];
	}

	long long ans = atol(c.c_str());
	char e = s[i];
	c = "";

	for (; i < s.size(); i++){
		if (s[i] == '+' || s[i] == '-'){
			if (e == '+') ans += atol(c.c_str());
			else ans -= atol(c.c_str());
			c = "";
			e = s[i];
		}
		else c += s[i];
	}
	if (e == '+') ans += atol(c.c_str());
	else ans -= atol(c.c_str());
	return ans;
}
int main(){
	
	string s;
	cin >> s;
	long long ans = -10000000000;
	string s2 = s;
	while (1){

		long long t = calc(s2);
		if (t > ans) ans = t;

		char tc = s2[s2.size() - 1];
		for (int i = s2.size() - 1; i >= 1; i--){
			s2[i] = s2[i - 1];
		}
		s2[0] = tc;

		if (s == s2) break;
	}

	cout << ans << endl;
}