#include <bits/stdc++.h>
using namespace std;
int cnt[26];
bool work() {
  char ch;
  while (isalpha(ch = getchar())) ++cnt[ch - 'a'];
  int c = 0;
  for (int x = 0; x < 26; ++x)
    if (cnt[x] & 1) ++c;
  return c == 0 || (c & 1);
}
int main() { puts(work() ? "First" : "Second"); }
