#include <stdio.h>
#include <string.h>
int main() {
char s[] = "python";
int len = strlen(s);
int index = (int)(len / 2);
if (len % 2 == 1) {
printf("%c", s[index]);
} else if (len % 2 == 0) {
printf("%c", s[index - 1]);
printf("%c", s[index]);
}
}
/*
run:
th
*/