N,A,B,X,Y=map(int,input().split())
H=list(map(int,input().split()))
for i in range(N):
    if H[i]>=X:
        if A>H[i]//X:
            A-=H[i]//X
            H[i]%=X
        else:
            H[i]-=A*X
            A=0
            break
if A>0:
    H.sort(reverse=True)
    for i in range(min(N,A)):
        H[i]=0
if sum(H)<=B*Y:
    print("Yes")
else:
    print("No")