const int MAXN = 100005;
long long a[MAXN];
int n, m;

bool check(long long x){
    long long cnt = 0;
    for(int i = 1; i <= n; i++){
        if(x == 0) return true;
        cnt += a[i] / x;
        if(cnt >= m) return true;
    }
    return false;
}

int main(){
    cin >> n >> m;
    long long mx = 0;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        mx = max(mx, a[i]);
    }

    long long l = 1, r = mx;
    long long ans = 0;

    while(l <= r){
        long long mid = l + (r - l) / 2;

        if(check(mid)){
            ans = mid;
            ______________________
        }else{
            ______________________
        }
    }

    cout << ans << endl;
    return 0;
}