#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  string s;
  cin >> s;
  int a[26];
  fill(a, a + 26, 0);
  for (int(i) = (0); (i) < (s.length()); (i)++) {
    a[s[i] - 'a']++;
  }
  int ans = 0;
  for (int(i) = (0); (i) < (26); (i)++)
    if (a[i] & 1) ans++;
  if (ans & 1 || ans == 0)
    cout << "First";
  else
    cout << "Second";
  return 0;
}
