import java.util.*; public class Main { static Scanner sc = new Scanner(System.in); public static void main(String[] args) { List s = split(sc.next()); List key = new ArrayList<>(); for (int i=0; iSystem.out.print(x));} } static List split (String s){ List list = new ArrayList<>(); for (int i=0; i list) { int n = list.size(); for (int i=0; i