using System;
class Program
{
static void Main() {
string s = "python";
int len = s.Length;
int index = len / 2;
if (len % 2 == 1) {
Console.Write(s[index]);
} else if (len % 2 == 0) {
Console.Write(s[index - 1]);
Console.Write(s[index]);
}
}
}
/*
run:
th
*/