#include<iostream>
using namespace std;
int main()
{
	int n,i,v[900],nr,max, a = -1, b = -1;
    cin>>n;
    for(i=0;i<900;i++)
        v[i]=0;
    for(i=0;i<n;i++) {
        cin>>nr;
        if(nr>99 && nr <1000)
            v[nr-100]++;
    }
    for (i = 899; i >= 0; i--) {
        if (a != -1 && b != -1)
            break;

        if (a == -1 && v[i] == 0) {
            a = i + 100;
            continue;
        }

        if (b == -1 && v[i] == 0)
            b = i + 100;
    }

    if (a == -1 || b == -1)
        cout << "NU EXISTA";
    else
        cout << b << ' ' << a;


    return 0;

}