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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int MAX_SIZE = 9;
  5.  
  6. void countDigits(int fr[], int num) {
  7.     const int TEN = 10;
  8.     do {
  9.         ++fr[num % TEN];
  10.         num /= TEN;
  11.     } while (num);
  12. }
  13.  
  14. int greatestCommonEvenDigit(const int fr[]) {
  15.     for (int i = MAX_SIZE; i >= 0; --i) {
  16.         if (fr[i] > 1 && i % 2 == 0) {
  17.             return i;
  18.         }
  19.     }
  20.     return -1;
  21. }
  22.  
  23. int commonEvenDigit(int n, int m) {
  24.     int fr[MAX_SIZE + 1] = {0};
  25.     countDigits(fr, n);
  26.     countDigits(fr, m);
  27.     return greatestCommonEvenDigit(fr);
  28. }
  29.  
  30. int main() {
  31.     int n, m;
  32.     cin >> n >> m;
  33.     int commonDigit = commonEvenDigit(n, m);
  34.     if (commonDigit >= 0) {
  35.         cout << commonDigit;
  36.     } else {
  37.         cout << "Experimentul a eșuat";
  38.     }
  39.     return 0;
  40. }
Success #stdin #stdout 0.01s 5288KB
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100043000 100030400
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4
https://ideone.com/L4cWg0
language:
C++ (gcc 8.3)
created:
8 days ago
visibility:
public

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