func_code_string: #include <bits/stdc++.h>   using namespace std;   void fast() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);   }   int main() {     fast();     long long n;     cin >> n;     if (n % 4 == 1)       cout <<  0  <<     <<  A  << endl;     else if (n % 4 == 0)       cout <<  1  <<     <<  A  << endl;     else if (n % 4 == 2)       cout <<  1  <<     <<  B  << endl;     else if (n % 4 == 3)       cout <<  2  <<     <<  A  << endl;     return 0;   }   