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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int ceil(int n, int k)
  5. {
  6.     n = ((n < 0) ? 0 : n);
  7.     if (n % k == 0)return n / k;
  8.     else return (n / k) + 1;
  9. }
  10.  
  11. int main()
  12. {
  13.     ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
  14.  
  15.     int t;
  16.     cin >> t;
  17.     while (t--)
  18.     {
  19.         int n, k;
  20.         cin >> n >> k;
  21.         if (n % 2 == 0)cout << ceil(n, k - 1) << endl;
  22.         else cout << ceil((n - k), k - 1) + 1 << endl;
  23.     }
  24.     return 0;
  25. }
  26.  
Success #stdin #stdout 0.05s 5292KB
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https://ideone.com/SWJuro
language:
C++ (gcc 8.3)
created:
41 days ago
visibility:
public

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