rt

#include <bits/stdc++.h>
using namespace std;
int n,a1,a2,a3,b1,b2,b3,ans;
int main(){
	cin >> n >> a1 >> a2 >> a3 >> b1 >> b2 >> b3;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			for(int k = 1; k <= n; k++){
				if((abs(i - a1) <= 2 && abs(j - a2) <= 2 && abs(k - a3) <= 2) || (abs(i - b1) <= 2 && abs(j - b2) <= 2 && abs(k - b3) <= 2)){
					ans++;
				}
			}
		}
	}
	cout << ans;
	return 0;
}