import std;
import core.bitop;
import core.checkedint;
import core.time;

void main() {
	int a, b, c, d, p, q, r, s, t;
	readf("%d %d %d %d\n", a, b, c, d);
	readf("%d %d %d %d %d\n", p, q, r, s, t);
	writeln(yes(a * p + b * q + c * r + d * s <= t));
}

pragma(inline)
string yes(const bool b) pure @nogc nothrow @safe {
	return b ? "Yes" : "No";
}