#pragma GCC optimize ("O2")
#pragma GCC target ("avx2")
#include<bits/stdc++.h>
//#include<atcoder/all>
//using namespace atcoder;

using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
#define Would
#define you
#define please


int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);


	int A, B, C, D, E;
	cin >> A >> B >> C >> D >> E;
	B += A;
	D += C;
	ll kotae0 = 0, kotae1 = 0;
	rep(i, B * D) {
		int p = i % B;
		int q = i % D;
		if (p < A && q < C) {
			kotae0++;
			if (i < E % (B * D)) kotae1++;
		}
	}
	ll kotae = E / (B * D) * kotae0 + kotae1;
	co(kotae);

	Would you please return 0;
}