1. for _ in range(int(input())):
  2. 	n, x, y = map(int, input().split())
  3. 	a = list(map(int, input().split()))
  4. 	if x < y:
  5. 		print((max(a) + y - 1)//y)
  6. 		continue
  7. 	ans = 0
  8. 	for i in reversed(range(0, n)):
  9. 		a[i] -= ans*y
  10. 		if a[i] <= 0:
  11. 			continue
  12. 		reqd = (a[i] + x - 1)//x
  13. 		ans += reqd
  14. 	print(ans)