func_code_string: #include <bits/stdc++.h>   int minDig(uint64_t n) {     int k = n % 10, min = k;     n /= 10;     while (n != 0) {       k = n % 10;       if (k <= min) min = k;       n /= 10;     }     return min;   }   int maxDig(uint64_t n) {     int k = n % 10, max = k;     n /= 10;     while (n != 0) {       k = n % 10;       if (k >= max) max = k;       n /= 10;     }     return max;   }   int searchzero(uint64_t n) {     while (n != 0) {       if (n % 10 == 0) return 1;       n /= 10;     }     return 0;   }   int main(void) {     int t;     uint64_t a, k;     scanf( %d , &t);     while (t--) {       scanf( %llu %llu , &a, &k);       for (uint64_t i = 1; i < k; i++) {         a += (minDig(a) * maxDig(a));         if (searchzero(a) == 1) break;       }       printf( %llu n , a);     }     return 0;   }   