
extension String: CollectionType {
    func toInts() -> [Int64] {
        return self.split(" ").map {Int64($0)!}
    }
    
    func toUInts() -> [UInt64] {
        return self.split(" ").map {UInt64($0)!}
    }
    
    func toStrings() -> [String] {
        return self.split(" ")
    }
}

var s = Array(readLine()!.characters)

var count = 0
var ok = true

while ok && 2 < s.count {
    ok = false
    for i in (0 ..< s.count - 2) {
        if s[i] != s[2] {
            s.removeAtIndex(i + 1)
            count += 1
            ok = true
            break
        }
    }
}

print(count % 2 == 0 ? "Second" : "First")
