#include <bits/stdc++.h>
using namespace std;
char s[10000];
int num[100];
int main() {
  int T, t, i, j, k, n, m = 0, len;
  scanf("%s", &s);
  len = strlen(s);
  for (i = 0; i < len; i++) {
    k = s[i] - 'a' + 1;
    num[k]++;
  }
  for (i = 1; i <= 26; i++)
    if (num[i] % 2 == 1) m++;
  if (m == 0 || m == 1)
    printf("First\n");
  else if (m % 2 == 0)
    printf("Second\n");
  else
    printf("First\n");
}
