#include <bits/stdc++.h>
using namespace std;
const int mx = 3333;
string s, ss, sss;
long long ret = 0;
int n, m, k, x, y, sol = 0;
int cnt[55];
int main() {
  cin >> s;
  for (int i = 0; i < s.size(); i++) {
    cnt[s[i] - 'a']++;
  }
  n = 0;
  for (int i = 0; i < 33; i++)
    if (cnt[i] % 2) n++;
  if (n % 2 || n == 0)
    cout << "First";
  else
    cout << "Second";
  cout << "\n\n\n";
  return 0;
}
