#include<iostream>
#include<string>
#include<map>
#include<algorithm>
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";
}