problem0008.lol

HAI 1.4
CAN HAS STRING?

I HAS A BigNum ITZ "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450"

I HAS A WinSize ITZ 13
I HAS A Len ITZ I IZ STRING'Z LEN YR BigNum MKAY
I HAS A End ITZ DIFFRENCE OF Len AN WinSize 
I HAS A MaxProdukt ITZ 0
IM IN YR Outer UPPIN YR Start WILE DIFFRINT Start AN End 
  I HAS A p ITZ 1
  IM IN YR Inner UPPIN YR Offset WILE DIFFRINT Offset AN WinSize
    I HAS A Index ITZ SUM OF Start AN Offset
    I HAS A Digit ITZ I IZ STRING'Z AT YR BigNum AN YR Index MKAY
    I HAS A Value ITZ MAEK Digit A NUMBAR
    p R PRODUKT OF p AN Value
  IM OUTTA YR Inner
  BOTH SAEM p AN BIGGR OF p AN MaxProdukt, O RLY?
    YA RLY
      MaxProdukt R p
  OIC
IM OUTTA YR Outer

VISIBLE MaxProdukt
KTHXBYE