using System;
class Program
{
static int get_last_character_repeated(string s) {
int len = s.Length, ch_idx = -1;
for (int i = 0; i < len; i++) {
for (int j = i + 1; j < len; j++) {
if (s[i] == s[j]) {
ch_idx = i;
break;
}
}
}
return ch_idx;
}
static void Main() {
string s = "abcdxypcbadom";
int i = get_last_character_repeated(s);
if (i == -1)
Console.WriteLine("Not found");
else
Console.WriteLine(s[i]);
}
}
/*
run:
d
*/