BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int a = Integer.parseInt(reader.readLine());
int b = Integer.parseInt(reader.readLine());
int c = Integer.parseInt(reader.readLine());
int d = Integer.parseInt(reader.readLine());
if (a >= b && a >= c && a >= d ){
System.out.println(a);
}else if(b >= a && b >= c && b >= d){
System.out.println(b);
}else if(c >= a && c >= b && c >= d){
System.out.println(c);
}else if(d >= a && d >= b && c >= d){
System.out.println(d);
}else if(a == b && a == c && a == d && d == c && d == b && b == c){
System.out.println(a);package com.javarush.task.task04.task0419;
/*
Максимум четырех чисел
*/
import java.io.*;
import java.util.*;
public class Solution {
public static void main(String[] args) throws Exception {
//напишите тут ваш код
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int a = Integer.parseInt(reader.readLine());
int b = Integer.parseInt(reader.readLine());
int c = Integer.parseInt(reader.readLine());
int d = Integer.parseInt(reader.readLine());
if (a > b & a > c & a > d ){
System.out.println(a);
}else if(b > a & b > c & b > d){
System.out.println(b);
}else if(c > a & c > b & c > d){
System.out.println(c);
}else if(d > a & d > b & c > d){
System.out.println(d);
}else if(a == b & a == c & a == d & d == c & d == b & b == c){
System.out.println(a);
}
}
}