No Such Element Exception - https://www.codechef.com/problems/CHEFEZQ

1

Running the code gives ouput - java.util.NoSuchElementException. But in the case of custom input, it works fine. Where am I wrong? Can anyone help me?

Chef and Easy Queries

/* 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
	{
	    try 
	    {
	        Scanner scan = new Scanner(System.in);
	        int tc = scan.nextInt();
	        
		    for (int i = 0; i < tc; i++)
		    {
		        int n;
		        long qpd;
		        long day = 0;
		        long q = 0;
		        boolean flag = false;
		        
		        n = scan.nextInt();
		        qpd = scan.nextLong();
		        
		        long[] qpdl = new long[n];
		        
		        for (int j = 0; j < n; j++) qpdl[j] = scan.nextLong();
		    
	    	    for (int j = 0; j < n; j++)
		        {
			        day++;	
			        qpdl[j] = qpdl[j] + q;
			        if (qpdl[j] < qpd)
			        {
			            System.out.println(day);
			            flag = true;
			            break;
			        }
			        else q = qpdl[j] - qpd;
		        }
		        if (!flag)
		        {
		            day += (q / qpd) + 1;
		            System.out.println(day);
		        }
		    }
	    }
	    catch(Exception e)
	    {
	        System.out.println(e);
	    }
	}
}
2

The code ran successfully when clicked button “Submit” and fetched total points. But always gives the same exception when clicked button “Run”. Can anyone explain this?

3

Codechef IDE does not automatically get the testcases. You need to explicitly provide the testcases. NoSuchElementException means that no input was given at all (in this case)

4

Thanks.
Actually I practiced on Hackerrank before CodeChef. That’s why I didn’t know about it.
Thank you for the reply.