Why I am getting wrong answer?

well,i was trying this question:https://www.hackerrank.com/contests/may13/challenges/equal
and i am getting wrong answer for two test cases can someone tell me where this program is going wrong along with valid solution to it:

#include<stdio.h>


#include<algorithm>
using namespace std;
int main()
{
int t,l1=0,i,n;
long k=0,s1=0,s=0;
int arr[10001];
int arr1[200];
scanf("%d",&t);
while(t--)
{
	scanf("%d",&n);
	for(i=0;i<n;i++)
	scanf("%d",&arr[i]);
	sort(arr,arr+n);
	s1=0;
	for(i=0;i<n-1;i++)
	{
		
		if(arr[i]!=arr[i+1])
		{
			s=arr[i+1]-arr[i];
			s1+=s;
			if(i!=n-2)
		arr[i+2]+=s1;
			if(s>=5)
			{
				k+=s/5;
				s=s%5;
			}
			if(s>=0)
			{
				k+=s/2;
				s=s%2;
			}
			
			k+=s;
		}
	}
	printf("%ld\n",k);
//		arr1[l1++]=k;
	k=0;
}
/*	for(i=0;i<l1;i++)
printf("%d\n",arr1[i]);*/
return 0;
}

thankx in advance…

Check for this test case…
INPUT:

1

3

1 5 5

OUTPUT should be 3 i guess
you answer gives 4 as the output…

Hope you got the mistake…There is a slight mistake in code…Hope you got the mistake

Happy coding…:slight_smile:

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