#include <bits/stdc++.h>
using namespace std;
int main() {
  char s[1001];
  int m[26];
  while (gets(s)) {
    memset(m, 0, sizeof(m));
    int len = strlen(s);
    int dan = 0, shuang = 0;
    for (int i = 0; i < len; i++) m[s[i] - 'a']++;
    for (int i = 0; i < 26; i++)
      if (m[i]) {
        if (m[i] % 2 == 0) shuang++;
        if (m[i] % 2) dan++;
      }
    if ((dan == 0) || (dan % 2))
      printf("First\n");
    else
      printf("Second\n");
  }
  return 0;
}
