#include <bits/stdc++.h>
using namespace std;
const long long inf = 1e9 + 5;
const long long INF = 1e18 + 5;
const long long maxn = 5e5 + 5;
long long n, l[555555], r[555555], dp[maxn], t[maxn], mx = -1000000001;
int a[555555];
long long nn = 4e18, d[105][105];
vector<long long> v, x, y;
int main() {
  cin.tie(0);
  cout.tie(0);
  ios_base::sync_with_stdio(NULL);
  long long n;
  cin >> n;
  for (long long i = 1; i <= n; i++) {
    cin >> a[i];
  }
  long long ans = 0;
  long long bal = 0, ca = 0, cb = 0;
  for (long long i = 1; i <= n; i++) {
    if (bal % 2 == 0)
      ca++;
    else
      cb++;
    if (a[i] < 0) bal++;
    if (bal % 2 == 0)
      ans += ca;
    else
      ans += cb;
  }
  cout << (n * (n + 1)) / 2 - ans << ' ' << ans;
  return 0;
}
