def input_data
a = []
while s = gets
a << s.chomp.to_i
end
a
end
def get_average(a)
s = 0
a.each do |a|
s += a
end
s.to_f / a.size
end
def get_median(a)
if a.size % 2 == 0
return (a[a.size/2-1] + a[a.size/2]).to_f / 2
else
return a[a.size/2].to_f
end
end
def print_result(n)
printf("%.1f\n", n)
end
a = input_data
a.sort!
print_result(get_average(a))
print_result(get_median(a))
ZGVmIGlucHV0X2RhdGEKICBhID0gW10KICB3aGlsZSBzID0gZ2V0cwogICAgYSA8PCBzLmNob21wLnRvX2kKICBlbmQKICBhCmVuZAoKZGVmIGdldF9hdmVyYWdlKGEpCiAgcyA9IDAKICBhLmVhY2ggZG8gfGF8CiAgICBzICs9IGEKICBlbmQKICBzLnRvX2YgLyBhLnNpemUKZW5kCgpkZWYgZ2V0X21lZGlhbihhKQogIGlmIGEuc2l6ZSAlIDIgPT0gMAogICAgcmV0dXJuIChhW2Euc2l6ZS8yLTFdICsgYVthLnNpemUvMl0pLnRvX2YgLyAyCiAgZWxzZQogICAgcmV0dXJuIGFbYS5zaXplLzJdLnRvX2YKICBlbmQKZW5kCgpkZWYgcHJpbnRfcmVzdWx0KG4pCiAgcHJpbnRmKCIlLjFmXG4iLCBuKQplbmQKCmEgPSBpbnB1dF9kYXRhCmEuc29ydCEKcHJpbnRfcmVzdWx0KGdldF9hdmVyYWdlKGEpKQpwcmludF9yZXN1bHQoZ2V0X21lZGlhbihhKSkK