func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n, m, count = 0;       cin >> n >> m;       string arr[n];       for (int i = 0; i < n; i++) {         cin >> arr[i];       }       for (int i = 0; i < (m - 1); i++) {         if (arr[n - 1][i] !=  R ) count++;       }       for (int i = 0; i < (n - 1); i++) {         if (arr[i][m - 1] !=  D ) count++;       }       cout << count << endl;     }   }   