C

#include <iostream>

using namespace std;
typedef long long ll;

ll gcd(ll a, ll b)
{
    return (b > 0) ? gcd(b, a % b) : a;
}

int main() {
    ll n, a, b, p, q;
    cin >> n >> a >> b >> p >> q;
    ll g = a * b / gcd(a, b);
    g = n / g;
    ll ans = 0;
    if (p > q)ans = n / a * p + (n / b - g) * q;
    else ans = n / b * q + (n / a - g) * p;
    cout << ans;
}