#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  ll n;
  cin >> n;
  vector<ll> in(n + 1);
  for (ll i = 0; i < n; i++) {
    ll x;
    cin >> x;
    if (x < 0) in[i + 1] = 1;
    in[i + 1] ^= in[i];
  }
  vector<ll> res(2), count = {1, 0};
  for (ll i = 1; i <= n; i++) {
    res[1] += count[in[i]];
    res[0] += count[in[i] ^ 1];
    count[in[i]]++;
  }
  cout << res[0] << " " << res[1] << endl;
}
