#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int counter1 = 0;
  int countereven = 0;
  int counterodd = 0;
  for (int i = 0; i < s.size(); i++) {
    for (int j = 0; j < s.size(); j++) {
      if (s[i] == s[j]) {
        counter1++;
      }
    }
    if (counter1 % 2 == 0) {
      countereven++;
      counter1 = 0;
    } else {
      counterodd++;
      counter1 = 0;
    }
  }
  if (counterodd == 0 || counterodd == 1) {
    cout << "First";
  } else if (counterodd % 2 == 0) {
    cout << "Second";
  } else {
    cout << "First";
  }
  return 0;
}
