#pragma GCC optimize("Ofast") #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; typedef long long int ll; typedef unsigned long long ull; mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); ll myRand(ll B) { return (ull)rng() % B; } inline double time() { return static_cast(chrono::duration_cast(chrono::steady_clock::now().time_since_epoch()).count()) * 1e-9; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); char c; cin >> c; if('4' <= c and c <= '5'){ cout << "Yes" << endl; } else{ cout << "No" << endl; } }