import Control.Monad

main = do
  [l,m,n] <-  replicateM 3 readLn
  let n' = n `div` 25 -- count:  1 -> 25
  let m' = (m + n') `div` 4 -- count: 25 -> 100
  putStr . show $ ((l+m') `mod` 10) + ((m + n') `mod` 4) + n `mod` 25