Varianta25Subiectul3Problema3.cpp

#include <iostream.h>
int n, k, a[100];
void f(int n, int a[100], int &k) {
  k = 0;
  int g = 0;
  for (int i = n - 1; i >= 0; i--)
    if (a[i] % 2 == 0) {
      k = k * 10 + a[i];
      g++;
    }
  if (g == 0)
    k = -1;
}
void main() {
  cin >> n;
  for (int i = 0; i < n; i++)
    cin >> a[i];
  f(n, a, k);
  cout << k;
}