#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 5e5 + 10;
const int mod = 1e9;

stack<int> q;

void solve()
{
	int sum = 0;
	int ans = 1;
	string s;
	cin >> s;
	for (int i = 0; i < (int)s.size(); i++)
	{
		if (s[i] == '(')
		{
			if (i == 0)
			{
				q.push(1);
			}
			else if (s[i - 1] == '-')
			{
				q.push(-1);
				ans = -ans;
			}
			else
			{
				q.push(1);
			}
		}
		if (s[i] == ')')
		{
			ans = ans * q.top();
			q.pop();
		}
		if (s[i] == '?')
		{
			if (i == 0)
			{
				if (ans == 1)
					sum += 9;
			}
			else if (s[i - 1] == '-')
			{
				if (ans == -1)
					sum += 9;
			}
			else
			{
				if (ans == 1)
					sum += 9;
			}
		}
		if (s[i] >= 48 && s[i] <= 57)
		{
			if (i == 0)
			{
				int k = 0;
				while (s[i] >= 48 && s[i] <= 57)
				{
					k = k * 10 + s[i] - 48;
					i++;
				}
				i--;
				if (ans == -1)
					k = -k;
				sum += k;
			}
			else if (s[i - 1] == '-')
			{

				int k = 0;
				while (s[i] >= 48 && s[i] <= 57)
				{
					k = k * 10 + s[i] - 48;
					i++;
				}
				i--;
				if (ans == 1)
					k = -k;
				sum += k;
			}
			else
			{
				int k = 0;
				while (s[i] >= 48 && s[i] <= 57)
				{
					k = k * 10 + s[i] - 48;
					i++;
				}
				i--;
				if (ans == -1)
					k = -k;
				sum += k;
			}
		}
	}
	cout << sum << endl;
	return;
}

signed main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t;
	t = 1;
	// cin >> t;

	while (t--)
	{
		solve();
	}
	return 0;
}