import std.stdio, std.string, std.conv;
import std.range, std.algorithm, std.array;


void main() {
    int n;
    scan(n);

    int[string] a;

    foreach (i ; 0 .. n) {
        auto s = readln.chomp;
        if (s in a) {
            a[s]++;
        }
        else {
            a[s] = 1;
        }
    }

    int m;
    scan(m);
    foreach (i ; 0 .. m) {
        auto s = readln.chomp;
        if (s in a) {
            a[s]--;
        }
        else {
            a[s] = -1;
        }
    }
    
    int ans;
    foreach (i ; a.byValue) {
        ans = max(ans, i);
    }
    writeln(ans);
}


void scan(T...)(ref T args) {
    import std.stdio : readln;
    import std.algorithm : splitter;
    import std.conv : to;
    import std.range.primitives;

    auto line = readln().splitter();
    foreach (ref arg; args) {
        arg = line.front.to!(typeof(arg));
        line.popFront();
    }
    assert(line.empty);
}



void fillAll(R, T)(ref R arr, T value) {
    static if (is(typeof(arr[] = value))) {
        arr[] = value;
    }
    else {
        foreach (ref e; arr) {
            fillAll(e, value);
        }
    }
}
