Alien Invasion

import java.util.*;

public class d {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		String s;
		
		int c = Integer.parseInt(in.nextLine());
		for (int i = 0; i < c; i++) {
			Map<String, Integer> d = new HashMap<>();
			int k = Integer.parseInt(in.nextLine().split(" ")[1]);
			for (int j = 0; j < k; j++) {
				s = in.nextLine();
				if (d.containsKey(s)) d.put(s, d.get(s) + 1);
				else d.put(s, 1);
			}
			System.out.println(d.values().stream().max(Comparator.naturalOrder()).get());
		}
		
	
		
		
	}
	
}

Test 1

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 2

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 3

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 4

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 5

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 6

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 7

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 8

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 9

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 10

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 11

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 12

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 13

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 14

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 15

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 16

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 17

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 18

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 19

Verdict: RUNTIME ERROR

Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at d.main(d.java:13)

Test 20

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.NumberFormatException: For input string: "999999874000003969"
	at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.base/java.lang.Integer.parseInt(Integer.java:652)
	at java.base/java.lang.Integer.parseInt(Integer.java:770)
	at d.main(d.java:10)

Test 21

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.NumberFormatException: For input string: "999999999999999989"
	at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.base/java.lang.Integer.parseInt(Integer.java:652)
	at java.base/java.lang.Integer.parseInt(Integer.java:770)
	at d.main(d.java:10)

Test 22

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.NumberFormatException: For input string: "1000000000000000000"
	at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.base/java.lang.Integer.parseInt(Integer.java:652)
	at java.base/java.lang.Integer.parseInt(Integer.java:770)
	at d.main(d.java:10)