Help me in solving BREAKSTRING problem

help
,
1

My issue

can anyone please explain the logic for the question like how to approach??

My code

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		while(t-->0)
		{
		    String S=sc.nextLine();
		    int n=S.length();
		    int count=0;
		    for (int j=1;j<n;j++)
		    {
                for (int k=j+1;k<n;k++)
                {
                    String P = S.substring(0, j);
                    String Q = S.substring(j, k);
                    String R = S.substring(k);  
                    if (P+Q+R==S && P+R==Q) 
                        count++;
                }
            }
         System.out.println(count);
		}
	}
}

Problem Link: Break The String Practice Coding Problem