27 lines
1.0 KiB
Java
27 lines
1.0 KiB
Java
import java.util.*;
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import java.io.*;
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public class Main{
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public static void main(String[] args) throws IOException, ClassNotFoundException{
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boolean[] f = new boolean[1000005];
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for(int i=2; i<f.length; i++) f[i]=true;
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for(int i=2; i<=(int)Math.sqrt(f.length); i++){
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if(f[i]){
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for(int u=i; u<=1000003/i; u++) f[i*u]=false;
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}
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}
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final int n = 1000000;
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ObjectInputStream o1 = new ObjectInputStream(new FileInputStream("DATA1.in"));
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ObjectInputStream o2 = new ObjectInputStream(new FileInputStream("DATA2.in"));
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ArrayList<Integer> a1 = (ArrayList<Integer>) o1.readObject();
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ArrayList<Integer> a2 = (ArrayList<Integer>) o2.readObject();
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TreeSet<Integer> t = new TreeSet<>(a1);
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t.forEach(e1 -> {
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int e2 = n - e1;
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if(e2 > e1 && f[e1] && f[e2] && a1.contains(e2) && !a2.contains(e1) && !a2.contains(e2)){
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System.out.println(e1 + " " + e2);
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}
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});
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}
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}
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