import sys input = sys.stdin.readline import heapq N,A,B,X,Y=map(int,input().split()) H=list(map(int,input().split())) Q=[] for h in H: Q.append(-h) heapq.heapify(Q) for i in range(A): x=-heapq.heappop(Q) x-=X heapq.heappush(Q,-x) S=-sum(Q) if S<=Y*B: print("Yes") else: print("No")