
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 index = 0

while true {
    if s.count - 2 < index {
        break
    }
    
    if s.count < index + 3 {
        break
    }
    
    if s[index] != s[index + 2] {
        s.removeAtIndex(index + 1)
        count += 1
        if(0 < index) {
            index -= 1
        }
    } else {
        index += 1
    }
}

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