Untitled

#include <bits/stdc++.h>

using namespace std;

int main() {
#ifdef _DEBUG
	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
#endif
	
	int n, m;
	cin >> n >> m;
	vector<long long> x(n), p(m);
	for (int i = 0; i < n; ++i) {
		cin >> x[i];
	}
	for (int i = 0; i < m; ++i) {
		cin >> p[i];
	}
	
	long long g = x[1] - x[0];
	for (int i = 2; i < n; ++i) {
		g = __gcd(g, x[i] - x[i - 1]);
	}
	
	for (int i = 0; i < m; ++i) {
		if (g % p[i] == 0) {
			cout << "YES" << endl;
			cout << x[0] << " " << i + 1 << endl;
			return 0;
		}
	}
	
	cout << "NO" << endl;
	
	return 0;
}