text: #include<bits/stdc++.h>
   
   
  #define ll long long
   
   
                            
  using namespace std;
  int main()
  {
      string s;
      cin >> s;
      ll H[26] = {0};
      for (ll i = 0; i < s.length(); i++)
      {
          H[s[i] - 'a']++;
      }
      ll even = 0, odd = 0;
      for (ll i = 0; i < 26; i++)
      {
          if (H[i] % 2 == 0)
          {
              even++;
          }
          else
          {
              odd++;
          }
      }
      ll cn = 0;
      if (odd <= 1)
      {
          cout << "First" << "\n";
          
      }
      else
      {
          if (even % 2 == 0)
          {
              for (ll i = 0; i < 26; i++)
              {
                  if (H[i] % 2 == 0)
                  {
                      H[i]--;
                  }
              }
              for (ll i = 0; i < 26; i++)
              {
                  if (H[i] % 2 != 0)
                  {
                      cn++;
                  }
              }
              if (cn % 2 != 0)
              {
                  cout << "First" << "\n";
              }
              else
              {
                  cout << "Second" << "\n";
              }
          }
          else
          {
              for (ll i = 0; i < 26; i++)
              {
                  if (H[i] % 2 == 0)
                  {
                      H[i]--;
                  }
              }
              for (ll i = 0; i < 26; i++)
              {
                  if (H[i] % 2 != 0)
                  {
                      cn++;
                  }
              }
              if (cn % 2 != 0)
              {
                  cout << "Second" << "\n";
              }
              else
              {
                  cout << "First" << "\n";
              }
          }
      }
   
   return 0;   
  }