#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt;
  cin >> tt;
  while (tt--) {
    int n;
    string s;
    cin >> n >> s;
    bool plus = true;
    int ans = 0;
    for (char c : s) {
      if (c == '+') {
        if (plus) ans += 9;
        plus = true;
      } else if (c == '-') {
        if (plus) ans += 9;
        plus = false;
      } else if (c == '*') {
        if (plus) ans += 9;
      } else {
        if (plus) ans += 9 - (c - '0');
        else ans += c - '0' - 1;
      }
    }
    cout << ans << '\n';
  }
}