OJ Board

I use the merge sort function in java but still got TLE. Please help me.
import java.util.*;
import java.io.*;

public class Main {

public static void main(String args[]) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
while (true) {
String tc ...

Can anybody help me what is wrong? i got the Wrong answer from the judge.
import java.util.*;

public class Main {

public static void main(String args[]) {
long x, y;
Scanner scan = new Scanner(System.in);
String line = scan.nextLine();
Scanner scan2 = new Scanner(line);
scan2.useDelimiter ...