func_code_string: #include <bits/stdc++.h>   using namespace std;   long long pow(long long p, long long r, long long m) {     long long ans = 1;     while (r > 0) {       if (r & 1) {         ans = ((ans % m) * (p % m)) % m;       }       r = r >> 1;       p = ((p % m) * (p % m)) % m;     }     return ans;   }   string con(string s) {     for (long long i = 0; i < s.length(); i++) {       s[i] = toupper(s[i]);     }     return s;   }   int32_t main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     ;     long long t;     cin >> t;     while (t--) {       string s;       cin >> s;       stack<long long> s1;       for (char i : s) {         if (!s1.empty() && i ==  B )           s1.pop();         else           s1.push(i);       }       cout << s1.size() <<   n ;     }   }   