(UVA)10370-及格率

#include<stdio.h>

int main(){
 int time;
 while (scanf("%d", &time) != EOF){
  while (time--){
   int num;
   scanf("%d", &num);

   float n[1000] = { 0 }, sum = 0;
   int i;
   for (i = 0; i < num; i++)
   {
    scanf("%f", &n[i]);
    sum += n[i];
   }

   float average;
   average = sum / num;

   float count = 0;
   for (i = 0; i<num; i++){
    if (n[i]>average)
     count++;
   }
   float per;

   per = (count / num) * 100;

   printf("%.3f%%\n", per);
  }
 }
 return 0;
}