Enormous input test (INTEST)

Here's my code :

#include <stdio.h>
int main (void) {
unsigned long long t, y, z, a;
a = 0;
scanf ("%I64u %I64u", &t, &y);
for (t; t > 0 ; --t) {
scanf ("%i", &z);
if (t == 0)
break;
else if (z % y == 0)
++a;
} 
printf ("%i\n", a);
return 0;
}

I am a beginner and I haven't learnt about arrays, functions or an other advanced topics. Is it possible to optimize this solution without using any advanced features of C. I know about looping using for, while and do statements and decision making with if and else if. The above code exceeds the time limit.