getting error for test case 2: In which for digit 4 error is showing.

can you explain why is so?

import java.util.Scanner; public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    int n=sc.nextInt();            
    String ans="";
    if(n>=1 && n<=100) {
        if(n%2==1){
            ans = "Weird"; 
        }else if(n%2==0){
            if (n>=2 && n<=5){
                ans = "not Weird"; 

            }else if (n>=6 && n<=20){
                ans = "Weird"; 
            }else if (n>20){
                ans = "Not Weird"; 
            }
        }
    }else{
        ans = "Invalid";
    }
      System.out.println(ans);
}

}