#include <bits/stdc++.h>
using namespace std;
template <typename a>
void SWAP(a &b, a &c) {
  a d = b;
  b = c;
  c = d;
}
long long power(long long a, long long b) {
  long long result = 1;
  while (b) {
    if (b & 1) result = a * result;
    a *= a;
    b >>= 1;
  }
  return result;
}
long long gcd(long long a, long long b) {
  while (b) {
    a = a % b;
    SWAP(a, b);
  }
  return a;
}
long long lcm(long long a, long long b) { return (a * (b / gcd(a, b))); }
int main() {
  string s;
  cin >> s;
  map<char, long long> mp;
  for (long long i = 0; i < ((long long)s.size()); i++) mp[s[i]]++;
  long long count_odd = 0, max_count = 0;
  for (auto it : mp) {
    max_count = (((max_count) > (it.second)) ? (max_count) : (it.second));
    if (it.second & 1) count_odd++;
  }
  if (max_count != ((long long)s.size()) && (count_odd > 0 && !(count_odd & 1)))
    printf("Second\n");
  else
    printf("First\n");
  return 0;
}
