main = do
    n <- readLn
    if n `elem` [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61]
        then putStrLn "素数!"
    else if n `elem` [i ^ 2 | i <- [2 .. 7]] then putStrLn "平方数!"
    else if n `elem` [i ^ 3 | i <- [2 .. 3]] then putStrLn "立方数!"
    else if n `elem` [6, 28] then putStrLn "完全数!"
    else print n