#include <iostream>
#include <algorithm>

using namespace std;
typedef long long ll;
const int N = 510;

int n, X, k, head, now = 1;
ll x = 1e9, y = 1, s;
int a[N], q[N], v[N];

ll gcd(ll x, ll y) {
	if(x == 0) return y;
	return gcd(y % x, x);
}

int main() {
	cin >> n >> X >> k;
	for(int i = 1; i <= k; ++i) cin >> a[i];
	for(int i = 0; i < n; ++i) v[i] = n + 1;
	v[X] = 0, q[++head] = X;
	while(now <= head) {
		int u = q[now++];
		for(int i = 1; i <= k; ++i) {
			int to = u + a[i];
			if(to >= n) to -= n;
			if(v[u] + 1 < v[to]) 
				v[to] = v[u] + 1, q[++head] = to;
		}
	}
	if(v[0] <= n) x = v[0];
	sort(v, v + n), s = v[0];
	for(int i = 1; i <= n; s += v[i++]) 
		if(x * i > y * (s + n)) x = s + n, y = i;
	ll num = gcd(min(x, y), max(x, y));
	cout << x / num << ' ' << y / num;
}