/**
*
*/
package com.test;

/**

• @author QJ的

*/
public class Testone {
public static void main(String[] args) {
int a=0;
int b=0;

	    for (int i = 100; i <=1000; i++) {
	        a++;
	        boolean d=true;
	        for (int j = i/2+1; j >1; j--) {
	            if(i%j==0){
	                d=false;
	            }
	        }
	        if(d==true){
	            b++;
	        }
	    }
	    int c=a-b;
	    System.out.println(c);
	}
}