#include <cstdio>
#include <vector>
using namespace std;

const int PRIMMAX = 1999999973;

int main() {
    freopen("loto2.in", "r", stdin);
    freopen("loto2.out", "w", stdout);

    int n, i, apare = false;
    scanf("%d", &n);
    vector<int> v(n, 0);

    for (i = 0; i < n; i++) {
        scanf("%d", &v[i]);
        if (v[i] == PRIMMAX)
            apare = true;
    }


    printf("%d", PRIMMAX);
    return 0;
}