#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
ll H;
cin >> H >> n;
vector<ll> h(n);
for(auto &i : h) cin >> i;
ll curr = 0;
for(int i = 0; i < n; i++) {
curr += h[i];
curr = max(0ll, curr);
if(curr >= H) {
cout << "0 " << i;
exit(0);
}
}
ll h0 = curr, S = accumulate(h.begin(), h.end(), 0ll);
if(S <= 0) {
cout << "-1 -1";
exit(0);
}
pair<ll, int> mn = {1e18, 1e18};
ll pref = 0;
for(int i = 0; i < n; i++) {
pref += h[i];
ll target = H - h0 - pref;
ll d_neg;
if(target <= 0)
d_neg = 0;
else
d_neg = (target + S - 1) / S;
ll curr = d_neg + 1;
mn = min(mn, {curr, i});
}
cout << mn.first << " " << mn.second;
return 0;
}
