#include <bits/stdc++.h>
#define endl '\n'
#define flash ios_base::sync_with_stdio(false); cout.tie(NULL); cin.tie(NULL);
#define ll long long
#define ull unsigned ll
using namespace std;
void solve()
{
ll n, h;
cin >> h >> n;
vector<ll> a(n);
for (int i = 0; i < n; i++) cin >> a[i];
vector<ll> sum(n);
sum[0] = a[0];
ll max_sum = a[0];
for (int i = 1; i < n; i++)
{
sum[i] = sum[i-1]+a[i];
max_sum = max(max_sum, sum[i]);
}
ll rep = sum[n-1];
if (rep <= 0)
{
cout << "-1 -1\n";
return;
}
ll ans = (h-max_sum)/rep;
ll cur = ans*rep;
for (int i = 0; i < n; i++)
{
cur += a[i];
if (cur >= h)
{
cout << ans << " " << i << endl;
return;
}
}
for (int i = 0; i < n; i++)
{
cur += a[i];
if (cur >= h)
{
cout << ans+1 << " " << i << endl;
return;
}
}
assert(false);
}
int main()
{
flash;
solve();
return 0;
}
