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  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4.     int n, k;
  5.     cin >> n >> k;
  6.     while (k > 0) {
  7.         if (n%10==0) {
  8.             n = n/10;
  9.         } else {
  10.             n=n-1;
  11.         }
  12.         k =k - 1;
  13.     }
  14.     cout << n << endl;
  15.     return 0;
  16. }
  17.  
  18.  
Success #stdin #stdout 0.01s 5332KB
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https://ideone.com/gYLwVV
language:
C++14 (gcc 8.3)
created:
8 days ago
visibility:
public

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