#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define vi vector<int>
#define pi pair<int,int>
#define sz(v) (int)(v).size()
#define all(v) (v).begin(), (v).end()
#define compact(v) (v).erase(unique(all(v)), (v).end())
template<class T> using upq = priority_queue<T, vector<T>, greater<T>>;
template<class T> int lwrbound(const vector<T>& a, const T& b, const int s = 0){return int(lower_bound(s + all(a), b) - a.begin());}
template<class T> int uprbound(const vector<T>& a, const T& b, const int s = 0){return int(upper_bound(s + all(a), b) - a.begin());}
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define ROF(i, a, b) for(int i = (a); i >= (b); i--)
#define sumof(x) accumulate(all(x), 0ll)
#define dbg(x) "[" << #x " = " << (x) << "]"
#define el "\n"
using ll = long long;
using ld = long double;
template<class T> bool ckmx(T& a, const T b){return (a < b ? a = b, true : false);}
template<class T> bool ckmn(T& a, const T b){return (a > b ? a = b, true : false);}
const int N = 2e5 + 5;
const int MOD = 1e9 + 7;
const ll INF = numeric_limits<ll>::max() / 8;
#define int long long
void Main()
{
int H, n; cin >> H >> n;
vi P(n + 1); FOR(i, 1, n) cin >> P[i];
if(sumof(P) <= 0){
cout << "-1 -1\n";
return;
}
int fd = 0;
FOR(i, 1, n){
fd = max(0ll, fd + P[i]);
if(fd >= H){
cout << "0 " << i - 1 << el;
return;
}
}
FOR(i, 1, n){
fd = fd + P[i];
if(fd >= H){
cout << "1 " << i - 1 << el;
return;
} else if(fd <= 0){
cout << "-1 -1\n";
return;
}
}
int Mx = 0, sum = 0;
FOR(i, 1, n){
sum = sum + P[i];
Mx = max(Mx, sum);
}
H -= Mx + fd;
int dif = sumof(P);
int cntD = H / dif;
H += Mx;
if(!cntD){
FOR(i, 0, 2){
FOR(j, 1, n){
H -= P[j];
if(H <= 0){
cout << cntD + 2 <<" " << j - 1 << el;
return;
}
}
++cntD;
}
return;
}
H -= max(0ll, (cntD - 1)) * dif;
FOR(i, 0, 2){
FOR(j, 1, n){
H -= P[j];
if(H <= 0){
cout << cntD + 1 <<" " << j - 1 << el;
return;
}
}
++cntD;
}
}
int32_t main()
{
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
#define name "InvMOD"
if(fopen(name".INP", "r")){
freopen(name".INP", "r", stdin);
freopen(name".OUT", "w", stdout);
}
int t = 1; while(t--) Main();
return 0;
}
