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package com.javarush.task.task07.task0717;
import java.util.ArrayList;
import java.io.*;
/*
Удваиваем слова
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList<String>();
for (int a = 0; a < 10; a++) {
String b = reader.readLine();
list.add(b);
}
ArrayList<String> result = doubleValues(list);
for (int a = 0; a < result.size(); a++) {
System.out.println(result.get(a));
}
}
public static ArrayList<String> doubleValues(ArrayList<String> list) {
for (int a = 0; a < list.size(); a+=2) {
String full = list.get(a);
list.add(a+1, full);
}
return null;
}
}