0分求解

#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
	int a,b,ans=0;
	cin>>a>>b;
	for(int i=a;i<b;i++){
		for(int j=2;j*j<i;j++){
			if(i%j==0){
				ans++;
			}
		}
	}
	cout<<ans;
	return 0;
}