#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (int i = a; i < b; i++)
using ll = long long;

int main(){
	int t;
	cin >> t;
	rep(ti, 0, t) {
		int n;
		string s;
		cin >> n >> s;
		int ans = 0, sf = 0;
		rep(i, 0, n) {
			if(isdigit(s[i])) {
				int d = s[i] - '0';
				if(sf) ans += d - 1;
				else ans += 9 - d;
			}
			else if(s[i] == '*') {
				if(sf == 0) ans += 9; 
			}
			else if(s[i] == '-') {
				sf = 1;
				ans += 9;
			}
			else if(s[i] == '+') {
				if(sf == 0) ans += 9;
				sf = 0;
			}
		}
		cout << ans << endl;
	}
}