#include <iostream>
#include <string>
#include <algorithm>
bool P(int value)
{
std::string left = std::to_string(value);
std::reverse(left.begin(), left.end());
std::string right = std::to_string(value);;
return left == right;
}
int main()
{
int n;
std::cin >> n;
int count = 0;
for (int i = 1; i <= n; ++i)
{
if (P(i))
{
count++;
}
}
std::cout << "Count palindrome: " << count << std::endl;
return 0;
}
i, n, k, max: integer;
begin
readln(n);
max := Integer.MinValue;
for i := 1 to n do
begin
readln(k);
if (k mod 4 = 0) then
max := System.Math.Max(max, k);
end;
writeln(max);
end.