#include <bits/stdc++.h>
using namespace std;
string s;
map<string, int> fi, bag;
map<string, int>::iterator it;
int main() {
  fi.clear();
  bag.clear();
  while (cin >> s) {
    int v = 0;
    while (1) {
      int pos = s.find_last_of('\\');
      if (pos == 2) break;
      s.erase(s.begin() + pos, s.end());
      bool flag = fi[s] == 0 && bag[s] == 0;
      bag[s] += v;
      if (flag) ++v;
      ++fi[s];
    }
  }
  int x = 0, y = 0;
  for (it = bag.begin(); it != bag.end(); ++it) x = max(x, it->second);
  for (it = fi.begin(); it != fi.end(); ++it) y = max(y, it->second);
  cout << x << " " << y << "\n";
}
