/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2020.09.11 21:42:15
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;

int main() {
    int n;cin >> n;
    vector<int> s(n),t(n);
    int s_0 = 0;
    int s_2 = 0;
    int t_0 = 0;
    int t_2 = 0;
    for (int i = 0; i < n; i++) {
        cin >> s[i];
        if (s[i] == 0) s_0++;
        else if (s[i] == 2) s_2++;
    }
    for (int i = 0; i < n; i++) {
        cin >> t[i];
        if (t[i] == 0) t_0++;
        else if (t[i] == 2) t_2++;
    }
    if (s_0 > 0 && s_2 > 0) {
        cout << s_2 * n + n - (s_2 + s_0) << endl;
    }
    else if (t_0 > 0 && t_2 > 0) {
        cout << t_2 * n + n - (t_2 + t_0) << endl;
    }
    else if (s_2 > 0 && t_2 > 0) {
        cout << (s_2 + t_2) * (n - 1) << endl;
    }
    else if (s_0 > 0) {
        cout << n - min(s_0,t_0) << endl;
    }
    else if (s_2 > 0) {
        cout << s_2 * n + n - s_2 << endl;
    }
    else if (t_0 > 0) {
        cout << n - min(s_0,t_0) << endl;
    }
    else if (t_2 > 0) {
        cout << t_2 * n + n - t_2 << endl;
    }
    else {
        cout << n << endl;
    }
    return 0;
}