#include <bits/stdc++.h>
using namespace std;
int main() {
  int s[30];
  int i;
  char t[10001];
  cin >> t;
  for (i = 0; i < 30; i++) {
    s[i] = 0;
  }
  int n = strlen(t);
  for (i = 0; i < n; i++) s[t[i] - 'a']++;
  for (i = 0; i < 26; i++) s[i] %= 2;
  int k = 0;
  for (i = 0; i < 26; i++) {
    if (s[i] != 0) k += s[i];
  }
  if (k <= 1)
    cout << "First";
  else {
    if (k % 2 == 1)
      cout << "First";
    else
      cout << "Second";
  }
}
