1900A.cpp

// coded by Cocane

#include<bits/stdc++.h>

#define ll long long
#define forn(i, n) for(int i = 0; i < n; i++)
#define for1(i, n) for(int i = 1; i <= n; i++)
#define foru(i, n) for(int i = n-1; i >= 0; i--)
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
#define allp(x) (x).begin(), (x).begin() + (x).size()/2, (x).rbegin()
#define pb push_back
#define ppb pop_back
#define read(a) for(auto &i: a) cin >> i
#define out(ans) cout<<ans<<endl
#define yn(a) cout<< (a ? "YES": "NO") <<endl

using namespace std;

typedef vector<int> vi;
typedef vector<ll> vll;
typedef double dl;


int main(){
		ios::sync_with_stdio(false);
		cin.tie(NULL);

		int t;
		cin>>t;
		while(t--){
				int n;
				string s;
				cin>>n>>s;

				int ct = 0;
				int f = 0;

				for (int i = 0; i < n; i++)
				{
					if(s[i] == '.') {
						ct++;
						if(ct == 3){
							out(2);
							f = 1;
							break;
						}
					}
					else ct = 0;
				}

				if(f == 0){
					int ops = 0;
					for (int i = 0; i < n; i++)
					{
						if(s[i] == '.') ops++;
					}
					cout<<ops<<endl;
				}
				
		}
		return 0;
}