import Control.Applicative
import Control.Monad
import System.IO
import Data.List

primes :: [Integer]
primes = sieve [2..]
  where
    sieve (p:xs) = p : sieve [x|x <- xs, x `mod` p > 0]
    
odds :: [Integer]
odds = [1,3..]

main :: IO ()
main = do
    k_temp <- getLine
    let k = read k_temp :: Int
    putStrLn $ show $ k^3

getMultipleLines :: Int -> IO [String]

getMultipleLines n
    | n <= 0 = return []
    | otherwise = do          
        x <- getLine         
        xs <- getMultipleLines (n-1)    
        let ret = (x:xs)    
        return ret