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

int main()
{
    vector<int> v1, v2, v3;
    int n;
    cin >> n;
    while (n--)
    {
        int x;
        cin >> x;
        v1.push_back(x);
    }
    int m;
    cin >> m;
    while (m--)
    {
        int x;
        cin >> x;
        v2.push_back(x);
    }
    set_symmetric_difference(v1.begin(), v1.end(), v2.begin(), v2.end(), back_inserter(v3));
    int i;
    for (i = 0; i < v3.size(); i++)
    {
        cout << v3[i] << endl;
    }
    return 0;
}
