func_code_string: #include <bits/stdc++.h>   using namespace std;   int mul(long long int a) {     int mi = 10, ma = 0;     while (a != 0) {       int d = a % 10;       mi = min(mi, d);       ma = max(ma, d);       a /= 10;     }     return mi * ma;   }   int main() {     int t = 0;     cin >> t;     while (t--) {       long long int n, k;       cin >> n >> k;       k--;       while (k--) {         int mult = mul(n);         if (mult == 0) {           break;         }         n += mult;       }       std::cout << n << std::endl;     }     return 0;   }   