Răspuns :
#include <iostream>
using namespace std;
unsigned long long int n,x,k=1;
int main ()
{
cin >> n;
while(n!=0)
{
if(n%10%2==0) x+=k*(n%10/2), k*=10;
x+=k*(n%10);
k*=10;
n/=10;
}
cout << x;
return 0;
}
using namespace std;
unsigned long long int n,x,k=1;
int main ()
{
cin >> n;
while(n!=0)
{
if(n%10%2==0) x+=k*(n%10/2), k*=10;
x+=k*(n%10);
k*=10;
n/=10;
}
cout << x;
return 0;
}