#include <bits/stdc++.h>
using namespace std;
long long MOD = 1e7 + 7;
long long gcd(long long a, long long b) {
  if (b == 0) return a;
  return gcd(b, a % b);
}
long long lcm(long long a, long long b) { return (a * b) / gcd(a, b); }
void solve() {
  string str;
  cin >> str;
  map<char, long long> mp;
  for (long long i = 0; i < str.length(); i++) {
    mp[str[i]]++;
  }
  long long oddOcc = 0;
  for (auto i : mp) {
    if (i.second % 2 == 1) {
      oddOcc++;
    }
  }
  if (oddOcc % 2 == 1 || oddOcc == 0) {
    cout << "First";
  } else {
    cout << "Second";
  }
}
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  ;
  cerr << "time taken : " << (float)clock() / CLOCKS_PER_SEC << " secs"
       << "\n";
  ;
  solve();
  return 0;
}
