import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
double n1 = Double.parseDouble(reader.readLine());
double n2 = Double.parseDouble(reader.readLine());
double n3 = Double.parseDouble(reader.readLine());
double n4 = Double.parseDouble(reader.readLine());
if (n1 >= n4){
if (n1 >= n3){
if (n1 >= n2)
System.out.println(n1);
}else {
if(n3 >= n2)
System.out.println(n3);
else System.out.println(n2);
}
}else {
if (n4 >= n3) {
if (n4 >= n2)
System.out.println(n4);
}else {
if(n3 >= n2)
System.out.println(n3);
else System.out.println(n2);
}
}
}
}
package com.javarush.task.task04.task0419;
/*
Максимум четырех чисел
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
double n1 = Double.parseDouble(reader.readLine());
double n2 = Double.parseDouble(reader.readLine());
double n3 = Double.parseDouble(reader.readLine());
double n4 = Double.parseDouble(reader.readLine());
if (n1 >= n4){
if (n1 >= n3){
if (n1 >= n2)
System.out.println(n1);
}else {
if(n3 >= n2)
System.out.println(n3);
else System.out.println(n2);
}
}else {
if (n4 >= n3) {
if (n4 >= n2)
System.out.println(n4);
}else {
if(n3 >= n2)
System.out.println(n3);
else System.out.println(n2);
}
}
}
}