【ACM】找新朋友

//make up a table of prime factors

#include <stdio.h>
#include <stdlib.h>
#define MAX 32769
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[]) {
	int Prime[MAX];
	int n,sum,t;
	int i,j;
	scanf("%d",&t);
	while( t-- && (scanf( "%d" , &n ) != EOF) ) {
		for( i = 0 ; i <= n ; i++ ) {
			Prime[i] = 0 ;
		}
		sum = 0;
		for( i = 2 ; i <= n ; i++ ) {
			if( (n%i == 0)  &&  (Prime[i] == 0) )
			 for( j = i ; j <= n ; j += i ) {
					Prime[j] = 1 ;
			 }
		}
		for( i = 1 ; i <= n ; i++) {
			if( Prime[i] == 0 ) {
				sum += 1;
			}
		}

		printf("%d\n",sum);

	}

	return 0;
}