boj 1929

#include <bits/stdc++.h>
using namespace std;

bool isPrime(int x) {
	if (x == 1) return false;
	if (x == 2 || x == 3) return true;
	if (x % 2 == 0) return false;
	for (int i = 3; i * i <= x; i+=2) {
		if (x % i==0) return false;
	}
	return true;
}

int main(void) {
	int M, N;
	cin >> M >> N;
	for (int i = M; i <= N; i++) {
		if (isPrime(i)) cout << i << "\n";
	}
}