func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long p, d, i, j, tmp, res;     cin >> p >> d;     res = p;     for (i = 999999999999999999ll; i; i /= 10) {       j = i + 1;       if (i > p) continue;       if (i == p) break;       if (p % j == i) {         tmp = (p / j) * j + i;         if (p - tmp <= d) {           res = tmp;           break;         }       } else {         tmp = (p / j - 1) * j + i;         if (p - tmp <= d) {           res = tmp;           break;         }       }     }     cout << res << endl;     return 0;   }   