GTLN = -1e18;
for (int i=1; i<=n; i++)
{
    GTLN = max(GTLN, a[i]);
}
cout << GTLN;

GTNN = 1e18;
for (int i=1; i<=n; i++)
{
    GTNN = min(GTNN, a[i]);
}
cout << GTNN;