#include<iostream>
    #include <string>
    using namespace std;
    int main(){

    int n;
    string s[n];
    string s2[n];
    cin>>n;
    for(int i=0;i<n;i++){ 
        cin>>s[i];
    }
    for(int j=0;j<n;j++){   
        cin>>s2[j];
    }

    int count;

    for(int i = 0; i<n; i++){

        if(s[i] != s2[i]){
            count ++;



        }
    }
    cout<<count;



        return 0;
    }