def wprowadzanie(tablica, ile):
for i in range(ile):
tablica[i] = int(input())
BB = [0]*5
wprowadzanie(BB, 5)
print(BB[0]*BB[1])
ZGVmIHdwcm93YWR6YW5pZSh0YWJsaWNhLCBpbGUpOgoJZm9yIGkgaW4gcmFuZ2UoaWxlKToKCQl0YWJsaWNhW2ldID0gaW50KGlucHV0KCkpCgkJCkJCID0gWzBdKjUKd3Byb3dhZHphbmllKEJCLCA1KQoKcHJpbnQoQkJbMF0qQkJbMV0p