#include <bits/stdc++.h>
using namespace std;
vector<pair<int, int>> v3;
vector<int> v, v1;
map<char, int> m2, m;
int n, i, j, cnt = 0;
string s;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  ;
  cin >> s;
  n = s.length();
  for (i = 0; i < n; i++) m[s[i]]++;
  i = 0;
  for (auto p : m) {
    if (p.second % 2 != 0) cnt++;
  }
  if (cnt == 0 || cnt == 1) {
    cout << "First" << endl;
    return 0;
  } else {
    if (cnt % 2 == 0) {
      cout << "Second" << endl;
      return 0;
    } else {
      cout << "First" << endl;
      return 0;
    }
  }
}
