#include <bits/stdc++.h>

#define int int64_t

using namespace std;

void solve(){
    int D;
    cin >> D;
    int A_p, B_p, A_f, B_f;
    cin >> A_p >> B_p >> A_f >> B_f;
    if(D == 1){
        if(max(A_p, max(A_f, max(B_p, B_f))) < abs((A_p - A_f) - (B_p - B_f)))
            cout << abs((A_p - A_f) - (B_p - B_f));
        else
            cout << -1;
    }
    else{
        if(max(A_p, max(A_f, max(B_p, B_f))) < abs((A_p - A_f) + (B_p - B_f)))
            cout << abs((A_p - A_f) + (B_p - B_f));
        else
            cout << -1;
    }
}

int32_t main() {
    int test_case = 1;
    //cin >> test_case;
    while(test_case--)
        solve();
}