#include <bits/stdc++.h>
using namespace std;
char s[1005];
int f[26];
int main() {
  scanf("%s", s);
  int N = strlen(s);
  for (int i = 0; i < N; ++i) f[s[i] - 'a']++;
  int c = 0;
  for (int i = 0; i < 26; ++i)
    if (f[i] & 1) ++c;
  if (c == 0 || (c & 1))
    printf("First");
  else
    printf("Second");
  return 0;
}
