#include <bits/stdc++.h>
using namespace std;
void fast() {
  ios_base::sync_with_stdio(0);
  cin.tie(NULL), cout.tie(NULL);
}
void file() { freopen("hotel.in", "r", stdin); }
int main() {
  fast();
  string s;
  cin >> s;
  int ch[27];
  fill(ch, ch + 27, 0);
  for (int i = 0; i < s.length(); i++) {
    ch[s[i] - 97]++;
  }
  int cnt = 0;
  for (int i = 0; i < 27; i++) {
    cnt += bool(ch[i] % 2);
  }
  if (!cnt) {
    cout << "First" << endl;
    exit(0);
  }
  if (cnt % 2 == 0)
    cout << "Second" << endl;
  else
    cout << "First" << endl;
  return 0;
}
