#include <bits/stdc++.h>
using namespace std;
int main() {
  string str;
  cin >> str;
  bool ok = true;
  while (1) {
    int ara[27];
    memset(ara, 0, sizeof(ara));
    long long n = str.size();
    for (long long i = 0; i < n; i++) {
      long long p = str[i] - 97;
      ara[p]++;
    }
    long long q = 0;
    for (long long i = 0; i < 27; i++) {
      if (ara[i] % 2 != 0) q++;
    }
    if (q > 1) {
      ok = !ok;
      str.erase(str.begin() + n - 1);
    } else {
      break;
    }
  }
  if (ok)
    cout << "First" << endl;
  else
    cout << "Second" << endl;
}
