from typing import List
def area_of_rectangle(width: int, height: int) -> int:
# write your code here ^_^
area=width*height
return area
h=input()
w=input()
sph=h.split()
spw=w.split()
print(area_of_rectangle(int(spw[2]),int(sph[2])))
ZnJvbSB0eXBpbmcgaW1wb3J0IExpc3QKZGVmIGFyZWFfb2ZfcmVjdGFuZ2xlKHdpZHRoOiBpbnQsIGhlaWdodDogaW50KSAtPiBpbnQ6CiAgICAjIHdyaXRlIHlvdXIgY29kZSBoZXJlIF5fXgogICAgYXJlYT13aWR0aCpoZWlnaHQKICAgIHJldHVybiBhcmVhCgpoPWlucHV0KCkgCnc9aW5wdXQoKQpzcGg9aC5zcGxpdCgpCnNwdz13LnNwbGl0KCkKCnByaW50KGFyZWFfb2ZfcmVjdGFuZ2xlKGludChzcHdbMl0pLGludChzcGhbMl0pKSkKCgo=