module Main where

d = [3, 4, 9, 14, 15, 19, 28, 37, 47, 50, 54, 56, 59, 61, 70, 73, 78, 81, 92, 95, 97, 99]

superset [] = [[]]
superset (x:xs) = ss ++ map (x:) ss
                  where ss = superset xs

check [] = False
check xs = m == sum xs - m where m = maximum xs
res = length . filter check . superset $ d