#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define rep(i, a, b) for (int i = (a); i < (b); ++i) #define MOD 1000000007 #define int long long using ll = long long; using namespace std; const int INF = 1LL << 50; using P = pair; struct Setup { Setup() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); } } SETUP; template bool chmin(T &a, T b) { if (a > b) { a = b; return true; } else { return false; } } template bool chmax(T &a, T b) { if (a < b) { a = b; return true; } else { return false; } } signed main() { int a, b, c, d; cin >> a >> b >> c >> d; while (a * c > b) { a--; } while (a + a * c > d) { a--; } cout << a << endl; }