OJ Board

I am getting WA on my following code, can anyone give me some suggestion about my mistake?
// 10650 determinate prime
#include <stdio.h>
#include <math.h>
#define MAX 32005

int a[32015];
int b[32015];
int c[32015];

void prime(int a[] )
{
int i,l,j,num;
num = MAX;
l = sqrt(num);
a[0]= a[1 ...