#include <bits/stdc++.h>
using namespace std;
int a[30];
string s;
int main() {
  while (cin >> s) {
    memset(a, 0, sizeof(a));
    for (int i = 0; s[i] != '\0'; i++) {
      a[s[i] - 'a']++;
    }
    int ans = 0;
    for (int i = 0; i <= 25; i++) {
      if (a[i] % 2) ans++;
    }
    if (ans < 2 || s.size() % 2) {
      cout << "First" << endl;
    } else {
      cout << "Second" << endl;
    }
  }
  return 0;
}
