#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 = max(0ll, curr + h[i]);
if(curr >= H) {
cout << "0 " << i;
exit(0);
}
}
ll h0 = curr, h1 = h0;
for(int i = 0; i < n; i++) {
curr = max(curr + h[i], 0ll);
h1 = max(h1, curr);
if(curr >= H) {
cout << "1 " << i;
exit(0);
}
}
ll h2 = curr;
ll st = h2 - h0;
if(st <= 0) {
cout << "-1 -1";
exit(0);
}
ll d = (H - h1 + st - 1) / st;
ll left = H - d * st - h0;
for(int i = 0; i < n; i++) {
left -= h[i];
if(left <= 0) {
cout << d + 1 << " " << i;
exit(0);
}
}
return 0;
}
