题解 | 复读机

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        for (int i = 0; i < 5; i++) {
            String a = in.next();
            if (a.contains(".")) {
                try {
                    System.out.printf("%.1f%n", Double.parseDouble(a));
                } catch (Exception e) {
                    System.out.println(a);
                }
            } else {
                System.out.println(a);
            }
        }
    }
}