Bon Appetit hackerrank solution in C language

#include<stdio.h>

#include<stdlib.h>

#include<assert.h>

#include<math.h>

int main()

{

long a[10000];

long n,k,b;

scanf("%ld %ld",&n,&k);

long sum=0;

for(long i=0;i<n;i++)

{

scanf("%ld",&a[i]);

}

for(long i=0;i<n;i++)

{

if(i!=k)

sum+=a[i];

}

sum=sum/2;

scanf("%ld",&b);

if(b-sum==0)

printf("Bon Appetit");

else

printf("%ld",(b-sum));

return 0;

}