#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

void solve()
{
  int n;
  cin >> n;
  string s;
  cin >> s;
  int ans = 0, ls = 1;
  for (int i = 0; i < n; ++i)
  {
    if (s[i] == '-' || s[i] == '+')
    {
      if (ls == 1) ans += 9;
      ls = (s[i] == '-' ? -1 : 1);
    }
    else if (s[i] != '*')
    {
      if (ls == 1) ans += '9' - s[i];
      else ans += s[i] - '1';
    }
    else
    {
      ans += (ls == 1 ? 9 : 0);
    }
  }
  cout << ans << endl;
}

int main()
{
  int t;
  cin >> t;
  while (t--) solve();
}