TLE in c but AC in c++ in EQIDLIS

Here is my code which gives TLE in c but is accepted in c++. How can i make it run within time limit in c as it is my preferred language.

#include<stdio.h>
int main()
{
	int test,n,count;
	scanf("%d",&test);
	while(test--)
	{
		count=0;
		int max=0,min=9999,maxi,mini;
		scanf("%d",&n);
		int arr[n],sum=0;
		for(int i=0;i<n;i++)
		{
			scanf("%d",&arr[i]);
			sum+=arr[i];
		}		
		if(sum%n!=0)
		{
			printf("-1\n");
			continue;
		}
		//printf("Min = %d   Max = %d \n",min,max);
		do
		{
			
			max=0,min=9999;
			for(int i=0;i<n;i++)
			{
			
				if(arr[i]>=max)	
				{
					max=arr[i];
					maxi=i;	
				}
				if(arr[i]<=min)
				{
					min=arr[i];
					mini=i;
				}
			}
			int temp=(max-min+1)/2;
			//temp--;
			arr[mini]+=temp;
			arr[maxi]-=temp;
			count++;
		}while(max!=min);
		printf("%d\n",count-1);
	}
}
//