func_code_string: #include <bits/stdc++.h>   using namespace std;   long long x, y;   string tt(long long a) {     string ans =   ;     while (a != 0) ans += (a % 10) +  0 , a /= 10;     int p = ans.length();     for (int i = 0; i * 2 < p; ++i) swap(ans[i], ans[p - i - 1]);     return ans;   }   int main() {     cin >> x >> y;     string s;     while (x != 1 || y != 1) {       if (x < y) {         s += tt((y - 1) / x) +  B ;         y = (y - 1) % x + 1;       } else if (x > y) {         s += tt((x - 1) / y) +  A ;         x = (x - 1) % y + 1;       } else {         cout <<  Impossible n ;         return 0;       }     }     cout << s <<   n ;     return 0;   }   