#include <bits/stdc++.h>
using namespace std;
long long a[27];
signed main() {
  string s;
  cin >> s;
  long long n = (long long)s.size();
  for (long long i = 0; i < n; i++) {
    a[s[i] - 97]++;
  }
  long long val = 0;
  for (long long i = 0; i < 27; i++) {
    if (a[i] % 2 != 0) val++;
  }
  if (val == 0)
    cout << "First";
  else if (val % 2 == 0) {
    cout << "Second";
  } else
    cout << "First";
}
