#include <bits/stdc++.h>
int main() {
  char s[1000];
  int letters[30] = {0};
  scanf("%s", s);
  int n = strlen(s);
  for (int i = 0; i < n; i++) letters[s[i] - 'a']++;
  int moves = 0;
  for (int i = 0; i < 30; i++)
    if (letters[i] % 2 != 0) moves++;
  if (moves % 2 == 1 || moves == 0)
    printf("First\n");
  else
    printf("Second\n");
  return 0;
}
