11번

import java.util.Scanner;
public class Main {
  public static void main(String args[]) {
    Scanner input = new Scanner(System.in);
    String world = input.next();
    System.out.print(world);
  }
}

12번

import java.util.Scanner;
public class Main {
  public static void main(String args[]) {
    Scanner input = new Scanner(System.in);
    float a = input.nextFloat();
    System.out.printf("%f", a);

      
  }
}

13번

import java.util.Scanner;
public class Main {
  public static void main(String args[]) {
    Scanner input = new Scanner(System.in); 
    int a = input.nextInt();
    int b = input.nextInt();
    System.out.printf("%d %d", a, b);
  }
}

14번

import java.util.Scanner;
public class Main {
  public static void main(String args[]) {
    Scanner input = new Scanner(System.in);
    String world1 = input.next();
    String world2 = input.next();
    System.out.printf("%s %s", world2, world1);
  }
}

15번

import java.util.Scanner;
public class Main {
  public static void main(String args[]) {
    Scanner input = new Scanner(System.in);
    float a = input.nextFloat();
    System.out.printf("%.2f" , a);
  }
}

17번

import java.util.Scanner;
public class Main {
	public static void main(String args[]) {
		Scanner input = new Scanner(System.in);
		int a = input.nextInt();
		System.out.printf("%d %d %d", a, a, a);
	}
}

18번

import java.util.Scanner;

public class Main {
    public static void main(String args[]) {
        Scanner input = new Scanner(System.in);
		String hm = input.next();
		System.out.println(hm);
    }
}

19번

import java.util.Scanner;
public class Main {
	public static void main(String args[]) {
		Scanner input = new Scanner(System.in);
		String hms = input.next();
		String  data[] = hms.split("[.]");  // .를 기준으로 나누기 
			int yy = Integer.parseInt(data[0]); //문자형을 10진수로 변환하기 
		    int mm = Integer.parseInt(data[1]);
		    int dd = Integer.parseInt(data[2]);
		  System.out.println(String.format("%04d.%02d.%02d", yy, mm, dd));
	}
}

20번

import java.util.Scanner;
public class Main {
  public static void main(String args[]) {
    Scanner input = new Scanner(System.in);
     String word = input.next();
    System.out.printf("%s", word);
  }
}