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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.     long long N, sum, subsidiary = 0, quantity = 0;
  7.     cin >> N;
  8.     while (N > 999999999)
  9.     {
  10.     	sum = 0;
  11.     	subsidiary = N;
  12.     	while (subsidiary!=0)
  13.         {
  14.             sum += subsidiary%10;
  15.             subsidiary /= 10;
  16.          }
  17.          N -= sum;
  18.          quantity++;
  19.     }
  20.     if (N == 999999999)
  21.     {
  22.     	N = 0;
  23.     	quantity += 25632473;
  24.     }
  25.     while (N > 0)
  26.     {
  27.     	sum = 0;
  28.     	subsidiary = N;
  29.     	while (subsidiary != 0)
  30.         {
  31.             sum += subsidiary%10;
  32.             subsidiary /= 10;
  33.          }
  34.          N -= sum;
  35.          quantity++;
  36.     }
  37.     cout << quantity << endl;
  38.     return 0;
  39. }
Success #stdin #stdout 0s 4400KB
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https://ideone.com/D8MJnX
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
secret

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