View difference between Paste ID: KXgVGnme and kWFtUtiK

 package lection05;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Scanner;
 import java.util.stream.Collectors;
 
 public class ME01Messaging {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
 
         List<Integer> symbols = Arrays.stream(scanner.nextLine().split(" "))
                 .map(Integer::parseInt)
                 .collect(Collectors.toList());
         List<Character> string = new ArrayList<>();
         String inputString = scanner.nextLine();
         for (int i = 0; i < inputString.length(); i++) {
             string.add(inputString.charAt(i));
         }
 
         String output="";
         for (int i = 0; i < symbols.size(); i++) {
             int index=0;
             for (int j = 0; j < symbols.get(i).toString().length(); j++) {
                 index+=Integer.parseInt(String.valueOf(symbols.get(i).toString().charAt(j)));
             }
             output+=string.get(index%string.size());
             string.remove(index%string.size());
         }
         System.out.println(output);
 
     }
 }