#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int count[50];
  memset(count, 0, sizeof(count));
  for (int i = 0; i < s.size(); i++) count[s[i] - 'a']++;
  int notPair = 0;
  for (int i = 0; i < 40; i++) {
    if (count[i] & 1) notPair++;
  }
  if (notPair & 1 || notPair == 0)
    cout << "First\n";
  else
    cout << "Second\n";
}
