#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int h = s.length();
  int a[26], t = 0;
  for (int i = 0; i < 26; i++) {
    a[i] = 0;
  }
  for (int i = 0; i < h; i++) {
    a[s[i] - 97] += 1;
  }
  for (int i = 0; i < 26; i++) {
    if (a[i] % 2 == 1) t += 1;
  }
  if (t % 2 == 1 || t == 0)
    cout << "First";
  else
    cout << "Second";
  return 0;
}
