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




int main(){
int s;
cin >> s;
int n;
cin >> n;
set <int> st;
map<int, int> mp;
for (int i = 0; i < n; i++){
    int x;
    cin >> x;
    if (s % x == 0){
        st.insert(x);
        mp[x] = i;
    }
}
for (auto to: st){
    if (st.count(s / to) != 0){

        cout << min(mp[to] + 1, mp[s/to] + 1) << ' ' << max(mp[to] + 1, mp[s/to] + 1);
        break;
    }
}

}