В чем роблема.
package com.javarush.task.task07.task0721;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
/*
Минимаксы в массивах
*/
public class Solution {
public static void main(String[] args) throws IOException {
Scanner scanner = new Scanner(System.in);
int maximum = 0;
int minimum = 0;
int[] nom = new int[20];
for (int i = 0; i < 20; i++){
nom[i] = scanner.nextInt();
}
for (int i = 0; i < 20; i++)
if (nom[i] > maximum){
maximum = minimum+ nom[i]-1;
minimum = maximum-(maximum-1);
}
System.out.print(maximum + " " + minimum);
}
}