content: module Main where
  
  import System.Environment (getArgs)
  import Data.Char (ord)
  import Control.Concurrent (threadDelay)
  
  -- Define a custom type for modular arithmetic operations
  newtype ModInt = ModInt { getValue :: Integer } deriving (Show, Eq)
  
  -- Define a modulus value for the modular arithmetic
  modulus :: Integer
  modulus = 1000000007
  
  -- Modular addition
  modAdd :: ModInt -> ModInt -> ModInt
  modAdd (ModInt x) (ModInt y) = ModInt ((x + y) `mod` modulus)
  
  -- Modular subtraction
  modSub :: ModInt -> ModInt -> ModInt
  modSub (ModInt x) (ModInt y) = ModInt ((x - y + modulus) `mod` modulus)
  
  -- Modular multiplication
  modMul :: ModInt -> ModInt -> ModInt
  modMul (ModInt x) (ModInt y) = ModInt ((x * y) `mod` modulus)
  
  -- Modular exponentiation
  modExp :: ModInt -> Integer -> ModInt
  modExp (ModInt x) n = ModInt (powMod x n modulus)
  
  -- Modular inversion (using Fermat's Little Theorem)
  modInv :: ModInt -> ModInt
  modInv (ModInt x) = modExp (ModInt x) (modulus - 2)
  
  -- Fast exponentiation with modulo
  powMod :: Integer -> Integer -> Integer -> Integer
  powMod _ 0 _ = 1
  powMod base exp' mod' = 
      let half = powMod base (exp' `div` 2) mod'
          halfSquared = (half * half) `mod` mod'
      in if exp' `mod` 2 == 0 then halfSquared else (base * halfSquared) `mod` mod'
  
  -- Complicated function with recursive calls and sleep delay
  complicatedFunction :: Integer -> Integer -> IO Integer
  complicatedFunction a b = do
      let result = loop1 a b (ModInt 0)
      threadDelay 3000000 -- Sleep for 3 seconds
      return (getValue result)
    where
      loop1 :: Integer -> Integer -> ModInt -> ModInt
      loop1 x y acc
        | y <= 0 = acc
        | otherwise = 
            let newAcc = modAdd acc (loop2 x y (ModInt 1) 0)
            in loop1 (x - 1) (y - 1) newAcc
  
      loop2 :: Integer -> Integer -> ModInt -> Integer -> ModInt
      loop2 x y modAcc idx
        | idx >= x = modAcc
        | otherwise =
            let nextModAcc = modAdd modAcc (modMul (ModInt idx) (modExp (ModInt y) (2 * idx)))
            in loop2 x y nextModAcc (idx + 1)
  
  -- Function to apply the function to each character in the input
  applyComplicatedFunction :: String -> IO ()
  applyComplicatedFunction input = checkSequence input expectedValues
    where
      expectedValues = [260883060,660502790,56707938,56707938,260883060,660502790,634584031,200260288,429639680,312531986,429639680,264427048,624072856,228752755,671507957,384072754,677616060,228752755,671507957,228752755,882563116,429639680,200260288,228752755,998127277,960113301,960113301,843398876]
      
      checkSequence :: String -> [Integer] -> IO ()
      checkSequence [] _ = putStrLn "Correct!"
      checkSequence _ [] = putStrLn "Correct!"
      checkSequence (c:cs) (e:es) = do
          result <- complicatedFunction (toInteger (ord c)) 1337
          if result == e
              then do
                  checkSequence cs es
              else do
                  putStrLn "Wrong!"
  
  -- Main function to process command-line arguments
  main :: IO ()
  main = do
      args <- getArgs
      putStrLn "Checking flag..."
      let input = if null args then "" else head args
      if length input == 28
          then applyComplicatedFunction input
          else return ()