Numere

#include <iostream>
using namespace std;
int main()
{
    int n,x,P=0,i;
    cin>>n;
    for (i=1;i<=n;i++)
    {
        cin>>x;
        if(x%2==0)
        {
            P=x;
            break;
        }
    }
    if(P!=0) cout<<P;
    else cout<<"IMPOSIBIL";
   return 0;
}