# your code goes here
#0JLQsNGB0LjQu9C10L3QutC+INCQ0YDRgtC10Lwg
#простезавдання1_14
def prog(a,b):
s = a**2-4*(((a-b)/2)**2)
return s
print(prog(10,8))
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCiMwSkxRc05HQjBMalF1OUMxMEwzUXV0QytJTkNRMFlEUmd0QzEwTHdnCgoKI9C/0YDQvtGB0YLQtdC30LDQstC00LDQvdC90Y8xXzE0CgpkZWYgcHJvZyhhLGIpOgogICAgcyA9IGEqKjItNCooKChhLWIpLzIpKioyKQogICAgcmV0dXJuIHMKcHJpbnQocHJvZygxMCw4KSkgICAg