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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int n, k;
  6.     cin >> n >> k;
  7.  
  8.     for (int i = 0; i < k; ++i) {  // Corrected loop condition
  9.         if (n % 10 == 0) {
  10.             n /= 10;
  11.         } 
  12.         else {
  13.             n -= 1;  
  14.         }
  15.     }
  16.     cout << n << endl;
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout 0.01s 5288KB
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stdout
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https://ideone.com/8QWXLo
language:
C++14 (gcc 8.3)
created:
12 days ago
visibility:
public

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