N,A,B,X,Y = map(int,input().split())
H = list(map(int,input().split()))
H.sort(reverse=True)
for i in range(N):
    if H[i]>=X and A>0:
        H[i]-=X
        A-=1

print('Yes'if sum(H[max(A,0):])<=Y*B else 'No')