// #pragma GCC optimize ("Ofast") // #pragma GCC optimize ("unroll-loops") // #pragma GCC target ("avx,avx2,fma") #include using std::cin, std::cout, std::cerr; using ll = long long; int main() { std::ios::sync_with_stdio(false); ll n; ll a[3]; cin >> n >> a[0] >> a[1] >> a[2] >> a[3]; ll ans = 0; for(int k = 1; k < 1 << 3; k ++) { ll lcm = 1; for(int i = 0; i < 3; i ++) if((k >> i) & 1) lcm = std::lcm(lcm, a[i]); int sgn = __builtin_popcount(k) % 2 == 1 ? 1 : -1; ans += sgn * (n / lcm); } cout << ans << '\n'; }