#include<bits/stdc++.h>

using namespace std;

int find_median(int arr[], int brr[], int start_a, int end_a, int start_b, int end_b){

    if(start_a >= end_a || start_b >= end_b)
        return 0;
    if((end_a - start_a == 1) && (end_b == start_a == 1))
        return (max(arr[start_a], brr[start_b]) + min(arr[end_a], brr[end_b]))/2;

    int ind_m1 = (start_a + end_a)/2;
    int ind_m2 = (start_b + end_b + 1)/2;

    int m1 = arr[ind_m1];
    int m2 = brr[ind_m2];

    if(m1 == m2)
        return m1;
    if(m1 < m2){
        start_a = ind_m1;
        end_b = ind_m2;
    }
    else{
        start_b = ind_m2;
        end_a = ind_m1;
    }

    return find_median(arr, brr, start_a, end_a, start_b, end_b);
}
int main() {
    int n;
    cin >> n;
    int a[n], b[n];
    for(int i = 0; i < n; i++)
        cin >> a[i];
    for(int i = 0; i < n; i++)
        cin >> b[i];
    int ans = find_median(a, b, 0, n-1, 0, n-1);
    cout << ans << endl;
	return 0;
}