# 0J/QsNGA0YXQvtC80LXQvdC60L4=
s=13.;x=13.;
def f(x):
return (x+s/x)/2
for i in range(10):
x=f(x)
print(x)
IyAwSi9Rc05HQTBZWFF2dEM4MExYUXZkQzYwTDQ9CnM9MTMuO3g9MTMuOwoKZGVmIGYoeCk6CiAgICByZXR1cm4gKHgrcy94KS8yCiAgICAKCgpmb3IgaSBpbiByYW5nZSgxMCk6CiAgICB4PWYoeCkKCgpwcmludCh4KQ==