import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Ft {
public static void main(String[] args) throws Exception{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int []a=new int[4];
int max=a[0],min=a[0];
for(int i=0;i<a.length;i++)
{