Contando estrelas - Roger Benet

IS4-benet.java

import java.io.*;
public class Main {
     public static void main(String[] args)throws IOException{
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
         
        int[] vet = new int[11000];
        int n,r,i,k;
        boolean ok;
         
        String w;   
        String[] aux;
         
        while((w = in.readLine()) != null){
             
            aux = w.split(" ");
            n = Integer.parseInt(aux[0]);   
            r = Integer.parseInt(aux[1]);
             
            aux = in.readLine().split(" ");
             
            for(i = 0; i < r; i++){
                k = Integer.parseInt(aux[i]);
                vet[k] = 1;
            }
             
            ok = true;
             
            for(i = 1; i <= n; i++){ 
                if(vet[i] == 0){
                    sb.append(i).append(" ");
                    ok = false;
                }
            }
             
            if(ok == false){
                System.out.println(sb.toString());
            }
             
            else {
                System.out.println("*");
            }
            sb.delete(0,sb.length());
            for(i = 1; i <= n; i++)
                vet[i] = 0;
        }       
    }
}