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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int TEN = 10;
  5.  
  6. int main() {
  7.     int n;
  8.     cin >> n;
  9.     int noEven = 0;
  10.     while (n >= TEN) {
  11.         if (((n / TEN) % TEN + n % TEN) % 2 == 0) {
  12.             ++noEven;
  13.         }
  14.         n /= TEN;
  15.     }
  16.     cout << noEven;
  17.     return 0;
  18. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/vjP1ib
language:
C++ (gcc 8.3)
created:
81 days ago
visibility:
public

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