// Codeforces Beta Round #62 A. Irrational problem

#include <iostream>
#include <string>

using namespace std;

int main(){
	int p1, p2, p3, p4, a, b;
	while(cin >> p1 >> p2 >> p3 >> p4 >> a >> b){
		int p = min(min(p1, p2), min(p3, p4));
		int res = 0;
		for(int i=a;i<=b;i++) if(i<p) res++;
		cout << res << endl;
	}
}