/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone{
 
	static void swap(double a, double b){
		if(b > a){
			double q = a;
			a = b;
			b = q;
		}
	}
 
	public static void main (String[] args)	{
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double b = in.nextDouble();
		double c = in.nextDouble();
		double d = in.nextDouble();
		swap(a, b);swap(c, d);
 
		System.out.printf("a=%f b=%f\n",a,b);
		System.out.printf("c=%f d=%f\n",c,d);
	}
}

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MTAgMTUKMTUgMTA=

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