蒟蒻求教

#include<iostream>
#include<algorithm>
using namespace std;
bool isM(int a1){
	if(a1 == 1){
		return 0;
	}
	for(int i = 2;i <= a1-1;i ++){
		if(a1 % i == 0){
			return 0;
		}
	}
	return 1;
}
int main(){
	int n,a1,a2;
	cin>>n;
	while(n--){
		cin>>a1>>a2;
		for(int i = a1;i <= a2;i ++){
			if(isM(i)){
				cout<<i<<endl;
			}
		}
		cout<<" "<<endl;
	} 
}