#include <fstream>
#include <iostream>
using namespace std;
int x,ok,par1=-1,par2=-1;
int main()
{
    ifstream in("bac.txt");
    while(in>>x)
    {
        if(ok==0)
        {
            if(x%2==1)
                ok=1;
        }
        else if(ok==1)
        {
            if(x%2==1)
                ok=2;
            else if(x%2==0)
            {
                par2=par1;
                par1=x;
            }
        }
    }
    if(par1==-1 || par2==-1)
        cout<<"Nu exista.";
    else
        cout<<par2<<' '<<par1;
    return 0;
}