#include <bits/stdc++.h>
#include <chrono>
#define ll long long int
#define endl '\n'
#define vn vector<ll>
#define vi vector<pair <ll,ll>>
using namespace std;
using namespace std::chrono;
const int MAX_N = 1e9 + 7;
#define pii pair<ll,ll>
const ll INF = 0x3f3f3f3f3f3f3f3f;
#define pb push_back
#define srt(vp) sort(vp.begin(), vp.end())
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
auto start = high_resolution_clock::now();
ll h,n;
cin>>h>>n;
vn v(n);
for (auto &x:v)cin>>x;
vn pos(n);
pos[0]=max(0LL,0+v[0]);
ll max_h = pos[0];
for (int i=1;i<n;i++){
pos[i]=max(0LL,pos[i-1]+v[i]);
max_h=max(max_h,pos[i]);
}
ll daily_gain = 0;
for (auto &x:v) daily_gain += x;
// check if snail never escapes
if (daily_gain <= 0 && max_h < h) {
cout<<-1<<" "<<-1<<endl;
}
else {
// check within first day
if (max_h >= h) {
ll curr = 0;
for (int i=0;i<n;i++){
curr = max(0LL, curr + v[i]);
if (curr >= h) {
cout<<0<<" "<<i<<endl;
return 0;
}
}
}
else {
// compute how many full days needed
ll rem = h - max_h;
ll days = rem / daily_gain;
if (rem % daily_gain) days++;
ll curr = days * daily_gain;
for (int i=0;i<n;i++){
curr = max(0LL, curr + v[i]);
if (curr >= h) {
cout<<days<<" "<<i<<endl;
return 0;
}
}
}
}
auto stop = high_resolution_clock::now();
auto duration = duration_cast<microseconds>(stop - start);
//cout << "Time taken by function: " << duration.count() << " microseconds" << endl;
return 0;
}
