#include<bits/stdc++.h>
using namespace std;

int main()
{
   int n,m;
   cin>>n>>m;
   
   map<string,int> mp1,mp2;
   
   for(int i=0;i<n;i++)
   {
      string s;
      cin>>s;
      mp1[s]++;
   }
   
   vector<string> common;
   for(int i=0;i<m;i++)
   {
      string s;
      cin>>s;
      if(mp1[s]!=0)                // line 1
         common.emplace_back(s);      // line 2
      mp2[s]++;
   }
   
   int len1 = (int)mp1.size();
   int len2 = (int)mp2.size();
   
   cout<<"len1 = "<<len1<<" , len2 = "<<len2<<"\n";
   
}