func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int r, c;   string s;   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     cin >> r >> c;     while (r--) cin >> s;     long long int ans = 0;     for (long long int i = 0; i <= c - 1; ++i) {       if (s[i] !=  B ) continue;       ans++;       while (i <= c - 1 && s[i] ==  B ) i++;     }     cout << ans;   }   